Working with Lead
Lead is a naturally occurring metal in the Earth’s crust with physical and chemical properties that make it a desirable metal component for many industrial applications. Over the years, lead was discovered to be a toxic metal. Consequently, its use in industrial products has been reduced. Although currently the use of lead is less common, lead exposure still occurs at work. This toxic metal can be found in a variety of industries. Workers can be exposed to lead during the following types of work activities:
General industry:
- lead production or smelting
- brass, copper, or lead foundries
- lead fishing weight production
- thermal stripping or sanding of old paint
- welding or cutting of old painted metal
- machining and grinding lead alloys
- battery manufacturing and recycling
- radiator manufacturing and repair
- scrap metal handling
- lead soldering
- indoor firing ranges
- ceramic glaze mixing
Construction jobs/tasks:
- home renovation/remodeling
- demolition of old structures
- steel bridge maintenance
- welding or cutting of old painted metal
- thermal stripping or sanding of old paint
The Safety Act and Occupational Health and Safety Regulations require employers to maintain their worksites in a way that does not endanger the health and safety of their workers and to provide information, instruction, training, and supervision to protect their workers. An employer must be aware of all the hazards a worker may encounter. This is accomplished by having a competent person complete a hazard assessment. Once the hazards are identified, the competent person determines the type of control measures (e.g. finding alternate metals) to implement. Note that employers who do not have a qualified person on staff must acquire the services of someone who has the appropriate training in lead hazard identification, control, and remediation. The WSCC Working with Lead Guideline Code of Practice outlines legislative requirements and provides resources for employers who use or encounter lead at their worksite.
It is important to note that employers must first attempt to control the hazards by using the hierarchy of controls, prior to having workers wear personal protective equipment (PPE). The hierarchy of controls requires employers to first consider alternative control measures, such as providing local ventilation or looking into the use of alternate substances instead of relying on PPE alone to protect workers. Remember, PPE is the last line of safety! See “PPE Basics” for further information on the hierarchy of controls.
If a competent/qualified person concludes that PPE must be used because other control measures cannot be implemented, then the Occupational Health and Safety Regulations require workers to use, properly care for, and inspect the PPE that is provided to them by the employer. These regulations also require employers to provide PPE at no cost to the individual worker and provide training to the worker on how to use and inspect the PPE properly.
Lead is listed as a designated chemical substance under Part 21 in Schedule R of the Occupational Health and Safety Regulations. The regulations prescribe the maximum amount of the designated substances that workers can be exposed to in a given time period, and ways to both control and assess hazardous substances in the workplace.
Employers must:
- monitor worker’s exposure to lead at the worksite;
- substitute lead, when possible, with a less hazardous substance;
- reduce worker exposure to lead and reduce lead contamination at the worksite to the extent that is reasonably possible;
- develop and implement safe operating procedures (SOP) for tasks that may expose workers to lead;
- implement control measures to prevent workers from being exposed to lead;
- inform workers about the possible health effects from lead exposure and tasks that may cause workers to be exposed to lead;
- train workers in the SOP;
- train workers in the proper use of required PPE;
- provide to the Joint Occupational Health and Safety Committee/Representative results of measurements of worker exposures to lead or worksite contamination;
- identify and record hazards that could occur from handling, storing, and using lead or lead-containing material at the worksite;
- clearly mark containers and areas which contain lead;
- provide adequate engineering controls to prevent the release of lead at the worksite. If not, provide PPE to workers;
- ensure the concentration of lead in air does not exceed the contamination limits for lead in Schedule O of the Occupational Health and Safety Regulations.
- provide additional protection for workers who are referred to as “certain workers” in the Occupational Health and Safety Regulations. Employers who are aware of workers with these conditions must minimize their exposure to lead. Also, if a worker requests alternative work then the employer must assign less hazardous alternative work (if available); and
- provide respiratory protective equipment and ensure workers wear the respiratory protective equipment when lead exposure cannot be otherwise controlled.
Workers are required to:
- ask the employer for the SOP before they proceed to work with lead or lead containing material;
- ensure they receive training in the SOP before they proceed to work with lead or lead containing material;
- follow the instructions in the SOP in order to avoid exposure to lead;
- take precautions for their own health and safety while working with lead;
- wear all devices and equipment assigned to them by their employer to protect their health and safety;
- inform their employer if they are sensitized to lead, react to lead, or are pregnant;
- request to be re-assigned to less hazardous alternate work if they are sensitized to lead, react to lead, or are pregnant;
- find out if the work area has been checked for lead dust or fumes; and
- see their doctor or an occupational physician if they are concerned about lead overexposure for themselves or others in their household. It is important for their doctor to know about their lead exposure even if they don’t have any symptoms. Note, an occupational physician is trained to recognize diseases associated with work and may be able to diagnose a lead-related disease more readily than a doctor not trained in occupational illnesses.
Medical staff must:
- submit a report to the Chief Safety Officer any time they treat a worker who is believed to have a medical condition listed in Schedule F of the Occupational Health and Safety Regulations.
Occupational Health and Safety Regulations
R-039-2015
Part 1 PRELIMINARY MATTERS
Section 5 Codes of practice
5. The Chief Safety Officer may consult with industry and others prior to approving and issuing a code of practice under subsection 18(3) of the Act.
Part 2 REPORTING
Section 10 Medical information
10. (1) Subject to subsection (2), a person who acquires information of a personal medical nature with respect to a worker shall not disclose that information unless the disclosure is
(a) to the worker;
(b) with the informed consent of the worker, to another person; or
(c) otherwise required by law.
(2) A medical professional who attends or treats a worker who is suffering from or is believed to be suffering from a medical condition that is listed in Schedule A and is related to the worker’s present or past work shall, as soon as is reasonably possible, inform the Chief Safety Officer of
(a) the medical condition from which the worker is suffering or is believed to be suffering; and
(b) the name and address of the most recent work site where exposure related to the medical condition is believed to have occurred.
[R-012-2020, s. 5]
Part 3 GENERAL DUTIES
Section 12 General duties of employers
12. An employer shall, in respect of a work site,
(a) provide and maintain systems of work and working environments that ensure, as far as is reasonably possible, the health and safety of workers;
(b) arrange for the use, handling, storage and transport of articles and substances in a manner that protects the health and safety of workers;
(c) provide information, instruction, training and supervision that is necessary to protect the health and safety of workers; and
(d) provide and maintain a safe means of entrance to and exit from the work site.
Part 7 PERSONAL PROTECTIVE EQUIPMENT
Section 90 General responsibilities
90. (1) An employer who is required by these regulations to provide personal protective equipment to a worker shall
(a) provide approved personal protective equipment for use by the worker at no cost to the worker;
(b) ensure that the personal protective equipment is used by the worker;
(c) ensure that the personal protective equipment is at the work site before work begins;
(d) ensure that the personal protective equipment is stored in a clean, secure location that is readily accessible to the worker;
(e) ensure that the worker is
(i) aware of the location of the personal protective equipment, and
(ii) trained in its use;
(f) inform the worker of the reasons why the personal protective equipment is required to be used and of the limitations of its protection; and
(g) ensure that personal protective equipment provided to the worker is
(i) suitable and adequate and a proper fit for the worker,
(ii) maintained and kept in a sanitary condition, and
(iii) removed from use or service when damaged.
(2) If an employer requires a worker to clean and maintain personal protective equipment, the employer shall ensure that the worker has adequate time to do so during normal working hours without loss of pay or benefits.
(3) If reasonably possible, an employer shall make appropriate adjustments to the work procedures and the rate of work to eliminate or reduce any danger or discomfort to the worker that could arise from the worker’s use of personal protective equipment.
(4) A worker who is provided with personal protective equipment by an employer shall
(a) use the personal protective equipment; and
(b) take reasonable steps to prevent damage to the personal protective equipment.
(5) If personal protective equipment provided to a worker becomes defective or otherwise fails to provide the protection it is intended for, the worker shall
(a) return the personal protective equipment to the employer; and
(b) inform the employer of the defect or other reason why the personal protective equipment does not provide the protection that it was intended to provide.
(6) An employer shall immediately repair or replace any personal protective equipment returned to the employer under paragraph (5)(a).
Part 21 CHEMICAL AND BIOLOGICAL SUBSTANCES
Section 309 Interpretation
309. (1) An employer shall, at a work site,
(a) monitor the use or presence of, or a worker’s exposure to, harmful or hazardous chemical or biological substances;
(b) if reasonably possible, substitute less harmful or hazardous chemical or biological substances for harmful or hazardous chemical or biological substances;
(c) subject to subsection 314(1), to the extent that is reasonably possible, reduce contamination of the work site by harmful or hazardous chemical or biological substances; and
(d) develop and implement work procedures and processes that are as safe as is reasonably possible for the handling, use, storage, production and disposal of harmful or hazardous chemical or biological substances.
(2) An employer shall take steps, to the extent that is reasonably possible, to prevent exposure of workers to
(a) harmful or hazardous chemical or biological substances; or
(b) chemical or biological substances in combination or association with other harmful or hazardous chemical or biological substances.
(3) An employer shall
(a) inform workers of the nature and degree of the effects to their health or safety of exposure to harmful or hazardous chemical or biological substances; and
(b) provide workers with adequate training in
(i) work procedures and processes developed under paragraph (1)(d), and
(ii) the proper use of personal protective equipment required by these regulations.
(4) An employer shall make available to the Committee or representative
(a) results of measurements of worker exposure to, and contamination of a work site by, harmful or hazardous chemical or biological substances; and
(b) a description of steps taken to reduce the contamination of a work site by, and eliminate or reduce exposure of the workers to, harmful or hazardous chemical or biological substances.
Section 310 List of chemical and biological substances
310. (1) An employer shall, in consultation with the Committee or representative,
(a) develop and maintain a list of harmful and hazardous chemical or biological substances that are regularly handled, used, stored, produced or disposed of in the course of work processes or that are otherwise present at a work site; and
(b) identify on the list referred to in paragraph (a) those chemical substances that are controlled products.
(2) The employer shall
(a) amend the list referred to in subsection (1) if harmful or hazardous chemical or biological substances are added to or removed from the work site;
(b) submit a copy of each amendment to the Committee or representative; and
(c) keep a copy of the list at the work site and make the list readily available to the workers.
Section 311 Precautions for certain substances
311. (1) If a chemical or biological substance is listed or identified under subsection 310(1), an employer shall take reasonable steps to
(a) identify and record the hazards that could arise from the handling, use, storage, production or disposal of the substance at the work site;
(b) determine and apply precautions that need to be taken with respect to the substance to ensure the health and safety of workers; and
(c) clearly mark the container holding the substance with the name of the substance.
(2) An employer shall, in consultation with the Committee or representative, develop and implement a program to instruct workers about the hazards of the substances listed and identified under section 310 and subsection (1) and train workers in the precautions to be taken with respect to those substances.
Section 313 Substances listed in Schedule R
313. If a worker is required or permitted to handle, use, store, produce or dispose of a chemical substance set out in Schedule R, an employer shall
(a) provide adequate engineering controls to prevent, to the extent that is reasonably possible, the release of the substance into the work site; and
(b) take other measures and provide personal protective equipment that meets the requirements of Part 7 to prevent, to the extent that is reasonably possible, exposure of workers to the substance.
Section 314 Substances listed in Schedule O
314. (1) Subject to sections 313 and 315, if a chemical or biological substance set out in Schedule O is present at a work site, an employer shall, to the extent that is reasonably possible,
(a) provide adequate engineering controls to ensure that the contamination limit set out in Schedule O is not exceeded; and
(b) take steps to ensure that workers’ personal exposure does not exceed the contamination limits set out in Schedule O.
(2) An employer shall, in consultation with the Committee or representative, develop and implement a written procedure in accordance with subsection (3) if a chemical or biological substance set out in Schedule O is present at a work site in an airborne concentration that could be hazardous to workers who
(a) are regularly required or permitted to work more than eight hours in a day or 40 hours in a week; or
(b) could be exposed to a combination or association of substances listed in Schedule O that have similar toxicological effects when acting on the same organ or body system.
(3) A written procedure required by subsection (2) must identify
(a) the substances to which workers could be exposed;
(b) the conditions under which workers could be required or permitted to work, including the frequency, quantity and duration of exposure to the substances; and
(c) the steps that the employer will take to ensure, to an extent that is reasonably possible, that workers’ personal exposure does not exceed the equivalent of the contamination limit set out in Schedule O.
Section 315 Protection of certain workers
315. (1) This section applies if a chemical or biological substance is present at a work site in a form and to an extent that could be harmful to a worker who
(a) has become sensitized to the substance;
(b) is unusually responsive to the substance; or
(c) is pregnant.
(2) An employer shall, after being made aware of a worker’s condition of a type described in subsection (1),
(a) if reasonably possible, take steps to minimize the exposure of the worker to the substance; or
(b) on the worker’s request, assign the worker to less hazardous alternate work, if that work is available.
Section 316 Respiratory protective devices
316. If it is not reasonably possible to reduce a worker’s personal exposure to a chemical or biological substance to the contamination limit set out in Schedule O, an employer shall provide an approved respiratory protective device that meets the requirements of Part 7 and require the worker to use it.
Part 33 REPEAL AND COMMENCEMENT
Schedule F Minimum Requirements for Type 2: Basic First Aid Kits
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| 1 | Adhesive bandages, sterile, assorted sizes (standard strip, large, fingertip, knuckle, large patch) | 25 | 50 | 100 |
| 2 | Gauze pad, sterile, individually wrapped, approximately 7.6 cm × 7.6 cm (3 in × 3 in) | 12 | 24 | 48 |
| 3 | Abdominal pad, sterile, individually wrapped, approximately 12.7 cm × 22.9 cm (5 in × 9 in) | 1 | 2 | 2 |
| 4 | Conforming stretch bandage, relaxed length, individually wrapped, approximately 5.1 cm × 1.8 m (2 in × 2 yd) | 1 roll | 2 rolls | 4 rolls |
| 5 | Conforming stretch bandage, relaxed length, individually wrapped, approximately 7.6 cm × 1.8 m (3 in × 2 yd) | 1 roll | 2 rolls | 4 rolls |
| 6 | Compress/pressure dressing with ties, sterile, approximately 10.2 cm × 10.2 cm (4 in × 4 in) | 2 | 4 | 8 |
| 7 | Triangular bandage, cotton, with 2 safety pins, approximately 101.6 cm × 101.6 cm × 142.2 cm (40 in × 40 in × 56 in) | 2 | 4 | 4 |
| 8 | Adhesive tape, approximately 2.5 cm (1 in) | 2.3 m (2.5 yd) total length | 4.6 m (5 yd) total length | 9.1 m (10 yd) total length |
| 9 | Antiseptic wound cleansing towelette, individually wrapped | 25 | 50 | 100 |
| 10 | Antibiotic ointment, topical, single use | 6 | 12 | 24 |
| 11 | Hand/skin cleansing towelette, individually wrapped (or equivalent) | 6 | 12 | 24 |
| 12 | CPR resuscitation barrier device, with one-way valve | 1 | 1 | 1 |
| 13 | Examination gloves, disposable, medical grade, onesize, non-latex, powder free | 4 pairs | 8 pairs | 16 pairs |
| 14 | Biohazard waste disposal bag, single use | 1 | 2 | 2 |
| 15 | Bandage scissors, stainless steel (with angled, blunt tip) minimum size approximately 14 cm (5.5 in) | 1 | 1 | 1 |
| 16 | Splinter forceps/tweezers, fine point, stainless steel, minimum size approximately 11.4 cm (4.5 in) | 1 | 1 | 1 |
| 17 | Emergency blanket, aluminized, non-stretch polyester, minimum size approximately 132 cm × 213 cm (52 in × 84 in) | 1 | 1 | 1 |
| 18 | Contents list | 1 | 1 | 1 |
Note:
1. All first aid kit contents must be made of latex-free materials.
[R-012-2020, s. 13]
Schedule O Contamination Limits Also check Schedules P and Q for substances (such as asbestos and benzene) with additional requirements
Table
| CAS* Number | Substance | 8 hour average contamination limit mg/m³ or ppm | 15 minute average contamination limit mg/m³ or ppm | Notation |
| 75-07-0 | Acetaldehyde | **C25 ppm | Schedule R | |
| 64-19-7 | Acetic acid | 10 ppm | 15 ppm | |
| 108-24-7 | Acetic anhydride | 5 ppm | 10 ppm | |
| 67-64-1 | Acetone | 500 ppm | 750 ppm | |
| 75-86-5 | Acetone cyanohydrin, as CN | **C5 mg/m³ | Skin | |
| 75-05-8 | Acetonitrile | 20 ppm | 30 ppm | Skin |
| 98-86-2 | Acetophenone | 10 ppm | 15 ppm | |
| 79-27-6 | Acetylene tetrabromide | 1 ppm | 3 ppm | |
| 50-78-2 | Acetylsalicylic acid | 5 mg/m³ | 10 mg/m³ | |
| 107-02-8 | Acrolein | **C0.1 ppm | Skin | |
| 79-06-1 | Acrylamide (inhalable fraction and vapour) | 0.03 mg/m³ | 0.09 mg/m³ | Schedule R, Skin |
| 79-10-7 | Acrylic acid | 2 ppm | 4 ppm | Skin |
| 107-13-1 | Acrylonitrile | 2 ppm | 4 ppm | Skin, Schedule R |
| 124-04-9 | Adipic acid | 5 mg/m³ | 10 mg/m³ | |
| 111-69-3 | Adiponitrile | 2 ppm | 4 ppm | Skin |
| 309-00-2 | Aldrin | 0.25 mg/m³ | 0.75 mg/m³ | Skin |
| Aliphatic hydrocarbon gases, Alkane [C1-C4] | 1000 ppm | 1250 ppm | ||
| 107-18-6 | Allyl alcohol | 0.5 ppm | 1.5 ppm | Skin |
| 107-05-1 | Allyl chloride | 1 ppm | 2 ppm | |
| 106-92-3 | Allyl glycidyl ether (AGE) | 1 ppm | 3 ppm | |
| 2179-59-1 | Allyl propyl disulphide | 0.5 ppm | 1.5 ppm | SEN |
| 7429-90-5 | Aluminum and compounds (as Al): | |||
| - | Metal dust | 10 mg/m³ | 20 mg/m³ | |
| - | Pyro powders | 5 mg/m³ | 10 mg/m³ | |
| - | Soluble salts | 2 mg/m³ | 4 mg/m³ | |
| - | Alkyls, not otherwise specified | 2 mg/m³ | 4 mg/m³ | |
| 1344-28-1 | Aluminum oxide | 10 mg/m³ | 20 mg/m³ | |
| 504-29-0 | 2-Aminopyridine | 0.5 ppm | 1.0 ppm | |
| 61-82-5 | Amitrole | 0.2 mg/m³ | 0.6 mg/m³ | Schedule R |
| 7664-41-7 | Ammonia | 25 ppm | 35 ppm | |
| 3734642 | Ammonium chloride fume | 10 mg/m³ | 20 mg/m³ | |
| 3825-26-1 | Ammonium perfluorooctanoate | 0.01 mg/m³ | 0.03 mg/m³ | Skin |
| 2145220 | Ammonium sulphamate (Ammate) | 10 mg/m³ | 20 mg/m³ | |
| 994-05-8 | tert-Amyl methyl ether (TAME) | 20 ppm | 30 ppm | |
| 62-53-3 | Aniline | 2 ppm | 4 ppm | Skin |
| 90-04-0 | o-Anisidine | 0.5 mg/m³ | 1.5 mg/m³ | Skin, Schedule R |
| 104-94-9 | p-Anisidine | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 7440-36-0 | Antimony and compounds, (as Sb) | 0.5 mg/m³ | 1.5 mg/m³ | |
| 86-88-4 | ANTU (alpha-Naphthyl thiourea) | 0.3 mg/m³ | 0.9 mg/m³ | |
| 7440-38-2 | Arsenic, and inorganic compounds, (as As) | 0.01 mg/m³ | 0.03 mg/m³ | Schedule R |
| 7784-42-1 | Arsine | 0.05 ppm | 0.15 ppm | |
| 8052-42-4 | Asphalt (bitumen) fume, as benzene soluble aerosol (inhalable fraction) | 0.5 mg/m³ | 1.5 mg/m³ | |
| 1912-24-9 | Atrazine | 5 mg/m³ | 10 mg/m³ | Schedule R |
| 86-50-0 | Azinphos-methyl (inhalable fraction and vapour) | 0.2 mg/m³ | 0.6 mg/m³ | Skin; SEN |
| 7440-39-3 | Barium and soluble compounds, (as Ba) | 0.5 mg/m³ | 1.5 mg/m³ | |
| 7727-43-7 | Barium sulphate | 10 mg/m³ | 20 mg/m³ | |
| 17804-35-2 | Benomyl | 10 mg/m³ | 20 mg/m³ | |
| 98-07-7 | Benzotrichloride | **C0.1 ppm | Skin, Schedule R | |
| 98-88-4 | Benzoyl chloride | **C0.5 ppm | Schedule R | |
| 94-36-0 | Benzoyl peroxide | 5 mg/m³ | 10 mg/m³ | |
| 140-11-4 | Benzyl acetate | 10 ppm | 20 ppm | |
| 100-44-7 | Benzyl chloride | 1 ppm | 2 ppm | Schedule R |
| 7440-41-7 | Beryllium and compounds, (as Be) | 0.002 mg/m³ | 0.01 mg/m³ | Schedule R |
| 92-52-4 | Biphenyl (diphenyl) | 0.2 ppm | 0.6 ppm | |
| 3033-62-3 | Bis (2-dimethylaminoethyl) ether (DMAEE) | 0.05 ppm | 0.15 ppm | Skin |
| 1304-82-1 | Bismuth telluride | |||
| - | Undoped | 10 mg/m³ | 20 mg/m³ | |
| - | Se-doped, as Bi2 Te 3 | 5 mg/m³ | 10 mg/m³ | |
| 1330-43-4; 1303- 96-4; 10043-35-3; 12179-04-3 | Borate compounds, inorganic (inhalable fraction) | 2 mg/m³ | 6 mg/m³ | |
| 1303-86-2 | Boron oxide | 10 mg/m³ | 20 mg/m³ | |
| 10294-33-4 | Boron tribromide | **C1 ppm | ||
| 2095578 | Boron trifluoride | **C1 ppm | ||
| 314-40-9 | Bromacil | 10 mg/m³ | 20 mg/m³ | |
| 7726-95-6 | Bromine | 0.1 ppm | 0.2 ppm | |
| 7789-30-2 | Bromine pentafluoride | 0.1 ppm | 0.3 ppm | |
| 74-97-5 | Bromochloromethane (Chlorobromomethane) | 200 ppm | 250 ppm | |
| 75-25-2 | Bromoform | 0.5 ppm | 1.5 ppm | Skin |
| 106-94-5 | 1-Bromopropane | 10 ppm | 20 ppm | |
| 106-99-0 | 1,3-Butadiene | 2 ppm | 4 ppm | Schedule R |
| 106-97-8; 75-28-5 | Butane, All isomers | See Aliphatic hydrocarbon gases [C1-C4] | ||
| 111-76-2 | 2-Butoxyethanol (Butyl Cellosolve or EGBE) | 20 ppm | 30 ppm | |
| 112-07-2 | 2-Butoxyethyl acetate (EGBEA) | 20 ppm | 30 ppm | |
| 123-86-4 | n-Butyl acetate | 150 ppm | 200 ppm | |
| 105-46-4 | sec-Butyl acetate | 200 ppm | 250 ppm | |
| 540-88-5 | tert-Butyl acetate | 200 ppm | 250 ppm | |
| 141-32-2 | n-Butyl acrylate | 2 ppm | 4 ppm | SEN |
| 71-36-3 | n-Butyl alcohol (n-butanol) | 20 ppm | 30 ppm | |
| 78-92-2 | sec-Butyl alcohol (sec-butanol) | 100 ppm | 125 ppm | |
| 75-65-0 | tert-Butyl alcohol (tert-butanol) | 100 ppm | 125 ppm | |
| 109-73-9 | n-Butylamine | **C5 ppm | Skin | |
| 1189-85-1 | tert-Butyl chromate, (as Cr03) | **C0.1 mg/m³ | Skin | |
| 192336 | n-Butyl glycidyl ether (BGE) | 3 ppm | 6 ppm | Skin, SEN |
| 138-22-7 | n-Butyl lactate | 5 ppm | 10 ppm | |
| 109-79-5 | n-Butyl mercaptan | 0.5 ppm | 1.5 ppm | |
| 89-72-5 | o-sec-Butylphenol | 5 ppm | 7 ppm | Skin |
| 98-51-1 | p-tert-Butyltoluene | 1 ppm | 2 ppm | |
| 7440-43-9 | Cadmium, and compounds, (as Cd): | Schedule R | ||
| - | (total fraction) | 0.01 mg/m³ | 0.03 mg/m³ | |
| - | (respirable fraction) | 0.002 mg/m³ | 0.006 mg/m³ | |
| 1317-65-3 | Calcium carbonate | 10 mg/m³ | 20 mg/m³ | |
| 13765-19-0 | Calcium chromate, (as Cr) | 0.001 mg/m³ | 0.003 mg/m³ | |
| 156-62-7 | Calcium cyanamide | 0.5 mg/m³ | 1.5 mg/m³ | |
| 1305-62-0 | Calcium hydroxide | 5 mg/m³ | 10 mg/m³ | |
| 1305-78-8 | Calcium oxide | 2 mg/m³ | 4 mg/m³ | |
| 1344-95-2 | Calcium silicate, synthetic nonfibrous | 10 mg/m³ | 20 mg/m³ | |
| 76-22-2 | Camphor, synthetic | 2 ppm | 3 ppm | |
| 105-60-2 | Caprolactam (inhalable fraction and vapour) | 5 mg/m³ | 10 mg/m³ | |
| 191905 | Captafol | 0.1 mg/m³ | 0.3 mg/m³ | Skin, Schedule R |
| 133-06-2 | Captan (inhalable fraction) | 5 mg/m³ | 10 mg/m³ | SEN |
| 63-25-2 | Carbaryl | 5 mg/m³ | 10 mg/m³ | |
| 1563-66-2 | Carbofuran (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 1333-86-4 | Carbon black | 3.5 mg/m³ | 7 mg/m³ | |
| 124-38-9 | Carbon dioxide | 5000 ppm | 30,000 ppm | |
| 75-15-0 | Carbon disulphide | 10 ppm | 15 ppm | Skin |
| 630-08-0 | Carbon monoxide | 25 ppm | 190 ppm | |
| 558-13-4 | Carbon tetrabromide | 0.1 ppm | 0.3 ppm | |
| 75-44-5 | Carbonyl chloride (Phosgene) | 0.1 ppm | 0.3 ppm | |
| 353-50-4 | Carbonyl fluoride | 2 ppm | 5 ppm | |
| 120-80-9 | Catechol (Pyrocatechol) | 5 ppm | 7.8 ppm | Skin |
| 9004-34-6 | Cellulose (paper fibre) | 10 mg/m³ | 20 mg/m³ | |
| 21351-79-1 | Cesium hydroxide | 2 mg/m³ | 4 mg/m³ | |
| 57-74-9 | Chlordane | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 8001-35-2 | Chlorinated camphene | 0.5 mg/m³ | 1 mg/m³ | Skin, Schedule R |
| 31242-93-0 | o-Chlorinated diphenyl oxide | 0.5 mg/m³ | 1.5 mg/m³ | |
| 7782-50-5 | Chlorine | 0.5 ppm | 1 ppm | |
| 2976453 | Chlorine dioxide | 0.1 ppm | 0.3 ppm | |
| 7790-91-2 | Chlorine trifluoride | **C 0.1 ppm | ||
| 107-20-0 | Chloroacetaldehyde | **C1 ppm | ||
| 78-95-5 | Chloroacetone | **C1 ppm | Skin | |
| 532-27-4 | alpha-Chloroacetophenone (Phenacyl chloride) | 0.05 ppm | 0.15 ppm | |
| 79-04-9 | Chloroacetyl chloride | 0.05 ppm | 0.15 ppm | Skin |
| 108-90-7 | Chlorobenzene (Monochlorobenzene) | 10 ppm | 15 ppm | |
| 2698-41-1 | o-Chlorobenzylidene malononitrile | **C0.05 ppm | Skin | |
| 126-99-8 | 2-Chloro-1,3-butadiene (beta-Chloroprene) | 10 ppm | 15 ppm | Skin |
| 75-45-6 | Chlorodifluoromethane | 1000 ppm | 1250 ppm | |
| 53469-21-9 | Chlorodiphenyl (42% chlorine) | 1 mg/m³ | 3 mg/m³ | Skin |
| 11097-69-1 | Chlorodiphenyl (54% chlorine) | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 107-07-3 | 2-Chloroethanol (Ethylene chlorohydrin) | **C1.0 ppm | Skin | |
| 600-25-9 | 1-Chloro-1-nitropropane | 2 ppm | 4 ppm | |
| 76-15-3 | Chloropentafluoroethane | 1000 ppm | 1250 ppm | |
| 76-06-2 | Chloropicrin | 0.1 ppm | 0.3 ppm | |
| 127-00-4; 78-89-7 | 1-Chloro-2-propanol and 2Chloro- 1-propanol | 1 ppm | 3 ppm | Skin |
| 598-78-7 | 2-Chloropropionic acid | 0.1 ppm | 0.3 ppm | Skin |
| 2039-87-4 | o-Chlorostyrene | 50 ppm | 75 ppm | |
| 95-49-8 | o-Chlorotoluene | 50 ppm | 65 ppm | |
| 2921-88-2 | Chlorpyrifos, (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 7440-47-3 | Chromium metal and inorganic compounds, (as Cr): | |||
| Metal and Cr (III) compounds | 0.5 mg/m³ | 1.5 mg/m³ | ||
| - | Water soluble Cr (VI) compounds | 0.05 mg/m³ | 0.15 mg/m³ | Schedule R |
| - | Insoluble Cr (VI) compounds | 0.01 mg/m³ | 0.03 mg/m³ | Schedule R |
| 14977-61-8 | Chromyl chloride | 0.025 ppm | 0.07 ppm | |
| 2971-90-6 | Clopidol | 10 mg/m³ | 20 mg/m³ | |
| - | Coal dust: | |||
| - | Anthracite (respirable fraction) | 0.4 mg/m³ | 1.2 mg/m³ | |
| - | Bituminous (respirable fraction) | 0.9 mg/m³ | 2.7 mg/m³ | |
| 65996-93-2 | Coal tar pitch volatiles, as benzene soluble aerosol (See Particulate polycyclic aromatic hydrocarbons) | 0.2 mg/m³ | 0.6 mg/m³ | Schedule R |
| 7440-48-4 | Cobalt and inorganic compounds, (as Co) | 0.02 mg/m³ | 0.06 mg/m³ | Schedule R |
| 10210-68-1 | Cobalt carbonyl, (as Co) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 5457516 | Cobalt hydrocarbonyl, (as Co) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 7440-50-8 | Copper, (as Cu): | |||
| - | fume | 0.2 mg/m³ | 0.6 mg/m³ | |
| - | dusts and mists | 1 mg/m³ | 3 mg/m³ | |
| - | Cotton dust, raw | 0.2 mg/m³ | 0.6 mg/m³ | |
| 1319-77-3 | Cresol, all isomers | 5 ppm | 10 ppm | Skin |
| 4170-30-3 | Crotonaldehyde | **C 0.3 ppm | Skin | |
| 299-86-5 | Crufomate | 5 mg/m³ | 10 mg/m³ | |
| 98-82-8 | Cumene | 50 ppm | 74 ppm | |
| 420-04-2 | Cyanamide | 2 mg/m³ | 4 mg/m³ | |
| 460-19-5 | Cyanogen | 10 ppm | 15 ppm | |
| 506-77-4 | Cyanogen chloride | **C0.3 ppm | ||
| 110-82-7 | Cyclohexane | 100 ppm | 150 ppm | |
| 108-93-0 | Cyclohexanol | 50 ppm | 62 ppm | Skin |
| 108-94-1 | Cyclohexanone | 20 ppm | 50 ppm | Skin |
| 110-83-8 | Cyclohexene | 300 ppm | 375 ppm | |
| 108-91-8 | Cyclohexylamine | 10 ppm | 15 ppm | |
| 121-82-4 | Cyclonite (RDX) | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 542-92-7 | Cyclopentadiene | 75 ppm | 94 ppm | |
| 287-92-3 | Cyclopentane | 600 ppm | 900 ppm | |
| 13121-70-5 | Cyhexatin | 5 mg/m³ | 10 mg/m³ | |
| 94-75-7 | 2,4-D (2,4-Dichlorophenoxy-acetic acid) | 10 mg/m³ | 20 mg/m³ | |
| 50-29-3 | DDT (Dichlorodiphenyltrichloro-ethane) | 1 mg/m³ | 3 mg/m³ | Schedule R |
| 17702-41-9 | Decaborane | 0.05 ppm | 0.15 ppm | Skin |
| 8065-48-3 | Demeton (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 919-86-8 | Demeton-S-methyl, (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin, SEN |
| 123-42-2 | Diacetone alcohol (4-hydroxy-4methyl-2-pentanone) | 50 ppm | 60 ppm | |
| 333-41-5 | Diazinon, (inhalable fraction and vapour) | 0.01 mg/m³ | 0.03 mg/m³ | Skin |
| 334-88-3 | Diazomethane | 0.2 ppm | 0.6 ppm | Schedule R |
| 19287-45-7 | Diborane | 0.1 ppm | 0.3 ppm | |
| 102-81-8 | 2-N-Dibutylaminoethanol | 0.5 ppm | 1 ppm | Skin |
| 2528-36-1 | Dibutyl phenyl phosphate | 0.3 ppm | 0.6 ppm | Skin |
| 107-66-4 | Dibutyl phosphate | 1 ppm | 2 ppm | |
| 84-74-2 | Dibutyl phthalate | 5 mg/m³ | 10 mg/m³ | |
| 79-43-6 | Dichloroacetic acid | 0.5 ppm | 1.5 ppm | Skin, Schedule R |
| 7572-29-4 | Dichloracetylene | **C0.1 ppm | ||
| 95-50-1 | o-Dichlorobenzene | 25 ppm | 50 ppm | |
| 106-46-7 | p-Dichlorobenzene | 10 ppm | 15 ppm | Schedule R |
| 764-41-0 | 1,4-Dichloro-2-butene | 0.005 ppm | 0.015 ppm | Skin, Schedule R |
| 75-71-8 | Dichlorodifluoromethane | 1000 ppm | 1250 ppm | |
| 118-52-5 | 1,3-Dichloro-5, 5-dimethyl hydantoin | 0.2 mg/m³ | 0.4 mg/m³ | |
| 75-34-3 | 1,1-Dichloroethane | 100 ppm | 125 ppm | |
| 540-59-0; 156-59-2; 156-60-5 | 1,2-Dichloroethylene, all isomers | 200 ppm | 250 ppm | |
| 111-44-4 | Dichloroethyl ether | 5 ppm | 10 ppm | Skin |
| 75-43-4 | Dichlorofluoromethane | 10 ppm | 15 ppm | |
| 75-09-2 | Dichloromethane | 50 ppm | 75 ppm | Schedule R |
| 594-72-9 | 1,1-Dichloro-1-nitroethane | 2 ppm | 4 ppm | |
| 542-75-6 | 1,3-Dichloropropene | 1 ppm | 2 ppm | Skin, Schedule R |
| 75-99-0 | 2,2-Dichloropropionic acid, (inhalable fraction) | 5 mg/m³ | 10 mg/m³ | |
| 76-14-2 | Dichlorotetrafluoroethane | 1000 ppm | 1250 ppm | |
| 62-73-7 | Dichlorvos (DDVP), (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | Skin, SEN, Schedule R |
| 141-66-2 | Dicrotophos, (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 77-73-6 | Dicyclopentadiene | 5 ppm | 8 ppm | |
| 102-54-5 | Dicyclopentadienyl iron | 10 mg/m³ | 20 mg/m³ | |
| 60-57-1 | Dieldrin | 0.25 mg/m³ | 0.75 mg/m³ | Skin |
| 683334-30-5; 68476-30-2; 68476-31-3; 68476-34-6; 77650-28-3 | Diesel fuel as total hydrocarbons, (vapour) | 100 mg/m³ | 150 mg/m³ | Skin |
| 111-42-2 | Diethanolamine | 2 mg/m³ | 4 mg/m³ | Skin |
| 109-89-7 | Diethylamine | 5 ppm | 15 ppm | Skin |
| 100-37-8 | 2-Diethylaminoethanol | 2 ppm | 4 ppm | Skin |
| 111-40-0 | Diethylene triamine | 1 ppm | 2 ppm | Skin |
| 96-22-0 | Diethyl ketone | 200 ppm | 300 ppm | |
| 84-66-2 | Diethyl phthalate | 5 mg/m³ | 10 mg/m³ | |
| 75-61-6 | Difluorodibromomethane | 100 ppm | 125 ppm | |
| 2238-7-5 | Diglycidyl ether (DGE) | 0.1 ppm | 0.3 ppm | |
| 108-83-8 | Diisobutyl ketone | 25 ppm | 30 ppm | |
| 108-18-9 | Diisopropylamine | 5 ppm | 7 ppm | Skin |
| 127-19-5 | N,N-Dimethylacetamide | 10 ppm | 15 ppm | Skin |
| 124-40-3 | Dimethylamine | 5 ppm | 15 ppm | |
| 121-69-7 | Dimethylaniline (N,N-Dimethylaniline) | 5 ppm | 10 ppm | Skin |
| 14857-34-2 | Dimethylethoxysilane | 0.5 ppm | 1.5 ppm | |
| 68-12-2 | Dimethylformamide | 10 ppm | 15 ppm | Skin, Schedule R |
| 57-14-7 | 1,1-Dimethylhydrazine | 0.01 ppm | 0.03 ppm | Skin, Schedule R |
| 131-11-3 | Dimethylphthalate | 5 mg/m³ | 10 mg/m³ | |
| 77-78-1 | Dimethyl sulphate | 0.1 ppm | 0.3 ppm | Skin, Schedule R |
| 75-18-3 | Dimethyl sulphide | 10 ppm | 20 ppm | |
| 148-1-6 | Dinitolmide | 5 mg/m³ | 10 mg/m³ | |
| 528-29-0; 99-65-0; 100-25-4; 25154- 54-5 | Dinitrobenzene (all isomers) | 0.15 ppm | 0.30 ppm | Skin |
| 534-52-1 | Dinitro-o-cresol | 0.2 mg/m³ | 0.6 mg/m³ | Skin |
| 25321-14-6 | Dinitrotoluene | 0.2 mg/m³ | 0.6 mg/m³ | Skin, Schedule R |
| 123-91-1 | 1,4-Dioxane | 20 ppm | 30 ppm | Skin, Schedule R |
| 78-34-2 | Dioxathion (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 646-06-0 | 1,3-Dioxolane | 20 ppm | 30 ppm | |
| 122-39-4 | Diphenylamine | 10 mg/m³ | 20 mg/m³ | |
| 34590-94-8 | Dipropylene glycol methyl ether (DPGME) | 100 ppm | 150 ppm | Skin |
| 123-19-3 | Dipropyl ketone | 50 ppm | 60 ppm | |
| 2764-72-9; 85-00-7; 6385-62-2 | Diquat: (inhalable fraction) (respirable fraction) | 0.5 mg/m³ 0.1 mg/m³ | 1.5 mg/m³ 0.3 mg/m³ | Skin |
| 117-81-7 | Di-sec, octyl phthalate (Di-2ethylhexyl phthalate or DEHP) | 5 mg/m³ | 10 mg/m³ | Schedule R |
| 97-77-8 | Disulphiram | 2 mg/m³ | 4 mg/m³ | |
| 298-04-4 | Disulphoton, (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 128-37-0 | 2,6-Di-tert-butyl-p- cresol (butylated hydroxytoluene or BHT) (inhalable fraction and vapour) | 2 mg/m³ | 4 mg/m³ | |
| 330-54-1 | Diuron | 10 mg/m³ | 20 mg/m³ | |
| 1321-74-0 | Divinyl benzene | 10 ppm | 15 ppm | |
| 112-55-0 | Dodecyl mercaptan | 0.1 ppm | 0.3 ppm | SEN |
| 1302-74-5 | Emery | 10 mg/m³ | 20 mg/m³ | |
| 115-29-7 | Endosulphan | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 72-20-8 | Endrin | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 13838-16-9 | Enflurane | 75 ppm | 100 ppm | |
| 106-89-8 | Epichlorohydrin | 0.5 ppm | 1.5 ppm | Skin, Schedule R |
| 2104-64-5 | EPN (inhalable fraction) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 74-84-0 | Ethane | See Aliphatic hydrocarbon gases [C1-C4] | ||
| 64-17-5 | Ethanol | 1000 ppm | 1250 ppm | |
| 141-43-5 | Ethanolamine | 3 ppm | 6 ppm | |
| 563-12-2 | Ethion, (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 110-80-5 | 2-Ethoxyethanol (Glycol monoethyl ether) | 5 ppm | 7 ppm | Skin |
| 111-15-9 | 2-Ethyoxyethyl acetate (Cellosolve acetate) | 5 ppm | 8 ppm | Skin |
| 141-78-6 | Ethyl acetate | 400 ppm | 500 ppm | |
| 140-88-5 | Ethyl acrylate | 5 ppm | 15 ppm | Schedule R |
| 75-04-7 | Ethylamine | 5 ppm | 15 ppm | Skin |
| 541-85-5 | Ethyl amyl ketone (5-Methyl-3-heptanone) | 25 ppm | 30 ppm | |
| 100-41-4 | Ethyl benzene | 100 ppm | 125 ppm | Schedule R |
| 74-96-4 | Ethyl bromide | 5 ppm | 7 ppm | Skin |
| 637-92-3 | Ethyl tert-butyl ether | 5 ppm | 10 ppm | |
| 106-35-4 | Ethyl butyl ketone (3-Heptanone) | 50 ppm | 75 ppm | |
| 75-00-3 | Ethyl chloride | 100 ppm | 125 ppm | Skin |
| 7085-85-0 | Ethyl cyanoacrylate | 0.2 ppm | 0.6 ppm | |
| 74-85-1 | Ethylene | 200 ppm | 250 ppm | |
| 107-15-3 | Ethylenediamine | 10 ppm | 15 ppm | Skin |
| 107-06-2 | Ethylene dichloride | 10 ppm | 20 ppm | |
| 107-21-1 | Ethylene glycol, (as an aerosol) | **C 100 mg/m³ | ||
| 628-96-6 | Ethylene glycol dinitrate (EGDN) | 0.05 ppm | 0.15 ppm | Skin |
| 75-21-8 | Ethylene oxide | 1 ppm | 2 ppm | Schedule R |
| 151-56-4 | Ethylenimine | 0.5 ppm | 1.5 ppm | Skin, Schedule R |
| 60-29-7 | Ethyl ether | 400 ppm | 500 ppm | |
| 109-94-4 | Ethyl formate | 100 ppm | 150 ppm | |
| 149-57-5 | 2-Ethylhexanoic acid, (inhalable fraction and vapour) | 5 mg/m³ | 10 mg/m³ | |
| 16219-75-3 | Ethylidene norbornene | **C5 ppm | ||
| 75-08-1 | Ethyl mercaptan | 0.5 ppm | 1.5 ppm | |
| 100-74-3 | N-Ethylmorpholine | 5 ppm | 8 ppm | Skin |
| 78-10-4 | Ethyl silicate | 10 ppm | 15 ppm | |
| 22224-92-6 | Fenamiphos | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 115-90-2 | Fensulphothion (inhalable fraction and vapour) | 0.01 mg/m³ | 0.03 mg/m³ | Skin |
| 55-38-9 | Fenthion | 0.2 mg/m³ | 0.6 mg/m³ | Skin |
| 14484-64-1 | Ferbam | 10 mg/m³ | 20 mg/m³ | |
| 12604-58-9 | Ferrovanadium dust | 1 mg/m³ | 3 mg/m³ | |
| - | Flour dust | 3 mg/m³ | 6 mg/m³ | SEN |
| - | Fluoride, (as F) | 2.5 mg/m³ | 5 mg/m³ | |
| 7782-41-4 | Fluorine | 1 ppm | 2 ppm | |
| 944-22-9 | Fonofos | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 50-00-0 | Formaldehyde | **C0.3 ppm | SEN, Schedule R | |
| 75-12-7 | Formamide | 10 ppm | 15 ppm | Skin |
| 64-18-6 | Formic acid | 5 ppm | 10 ppm | |
| 98-01-1 | Furfural | 2 ppm | 4 ppm | Skin |
| 98-00-0 | Furfuryl alcohol | 10 ppm | 15 ppm | Skin |
| 36547 | Gallium arsenide (respirable fraction) | 0.0003 mg/m³ | 0.0009 mg/m³ | |
| 86290-81-5 | Gasoline | 300 ppm | 500 ppm | |
| 7782-65-2 | Germanium tetrahydride | 0.2 ppm | 0.6 ppm | |
| 111-30-8 | Glutaraldehyde, activated and inactivated | **C0.05 ppm | SEN | |
| 56-81-5 | Glycerin mist | 10 mg/m³ | 20 mg/m³ | |
| 556-52-5 | Glycidol | 2 ppm | 4 ppm | |
| 107-22-2 | Glyoxal, (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | SEN |
| - | Grain dust (oat, wheat, barley) | 4 mg/m³ | 8 mg/m³ | |
| 7782-42-5 | Graphite, natural-all forms except graphite fibres (respirable fraction) | 2 mg/m³ | 4 mg/m³ | |
| 7778-18-9 | Gypsum (Calcium sulphate) | 10 mg/m³ | 20 mg/m³ | |
| 7440-58-6 | Hafnium and compounds, (as Hf) | 0.5 mg/m³ | 1.5 mg/m³ | |
| 151-67-7 | Halothane | 50 ppm | 60 ppm | |
| 76-44-8; 1024-57-3 | Heptachlor and Heptchlor epoxide | 0.05 mg/m³ | 0.15 mg/m³ | Skin, Schedule R |
| 142-82-5 | Heptane (n-Heptane) | 400 ppm | 500 ppm | |
| 118-74-1 | Hexachlorobenzene | 0.002 mg/m³ | 0.006 mg/m³ | Skin, Schedule R |
| 87-68-3 | Hexachlorobutadiene | 0.02 ppm | 0.06 ppm | Skin, Schedule R |
| 77-47-4 | Hexachlorocyclopentadiene | 0.01 ppm | 0.03 ppm | |
| 67-72-1 | Hexachloroethane | 1 ppm | 2 ppm | Skin, Schedule R |
| 1335-87-1 | Hexachloronaphthalene | 0.2 mg/m³ | 0.6 mg/m³ | Skin |
| 684-16-2 | Hexafluoroacetone | 0.1 ppm | 0.3 ppm | Skin |
| 85-42-7; 13149-00-3; 14166-21-3 | Hexahydrophthalic anhydride, (inhalable fraction and vapour), all isomers | **C0.005 mg/m³ | SEN | |
| 822-06-0 | Hexamethylene diisocyanate | 0.005 ppm | 0.015 ppm | |
| 110-54-3 | Hexane (n-Hexane) | 50 ppm | 62.5 ppm | Skin |
| - | Hexane (other isomers) | 500 ppm | 1000 ppm | |
| 124-09-4 | Hexanediamine | 0.5 ppm | 1.0 ppm | |
| 592-41-6 | 1-Hexene | 50 ppm | 75 ppm | |
| 108-84-9 | sec-Hexyl acetate | 50 ppm | 60 ppm | |
| 107-41-5 | Hexylene glycol | **C25 ppm | ||
| 302-01-2 | Hydrazine | 0.01 ppm | 0.03 ppm | Skin, Schedule R |
| 61788-32-7 | Hydrogenated terphenyls (nonirradiated) | 0.5 ppm | 1.5 ppm | |
| 10035-10-6 | Hydrogen bromide | **C2 ppm | ||
| 2099048 | Hydrogen chloride | **C2 ppm | ||
| - | Hydrogen cyanide and cyanide salts, (as CN): | |||
| 74-90-8 | Hydrogen cyanide | **C4.7 ppm | Skin | |
| 592-01-8; 151-50-8; 143-33-9 | Cyanide salts | **C 5 mg/m³ | Skin | |
| 7664-39-3 | Hydrogen fluoride, (as F) | 0.5 ppm | **C 2 ppm | |
| 7722-84-1 | Hydrogen peroxide | 1 ppm | 2 ppm | |
| 2148906 | Hydrogen selenide, (as Se) | 0.05 ppm | 0.15 ppm | |
| 2148875 | Hydrogen sulphide | 10 ppm | 15 ppm | |
| 123-31-9 | Hydroquinone | 2 mg/m³ | 4 mg/m³ | |
| 999-61-1 | 2-Hydroxypropyl acrylate | 0.5 ppm | 1 ppm | Skin, SEN |
| 95-13-6 | Indene | 10 ppm | 15 ppm | |
| 7440-74-6 | Indium and Compounds, (as In) | 0.1 mg/m³ | 0.3 mg/m³ | Schedule R (Indium pho- sphide) |
| 7553-56-2 | Iodine | **C0.1 ppm | ||
| 75-47-8 | Iodoform | 0.6 ppm | 1.2 ppm | |
| 1309-37-1 | Iron oxide fume, (dust and fume) (Fe2O3, as Fe) | 5 mg/m³ | 10 mg/m³ | |
| 13463-40-6 | Iron pentacarbonyl, (as Fe) | 0.1 ppm | 0.2 ppm | |
| Iron salts, soluble, (as Fe) | 1 mg/m³ | 3 mg/m³ | ||
| 123-51-3 | Isoamyl alcohol | 100 ppm | 125 ppm | |
| 110-19-0 | Isobutyl acetate | 150 ppm | 188 ppm | |
| 78-83-1 | Isobutyl alcohol | 50 ppm | 60 ppm | |
| 542-56-3 | Isobutyl nitrite, (inhalable fraction and vapour) | **C1 ppm | ||
| 26952-21-6 | Isooctyl alcohol | 50 ppm | 60 ppm | Skin |
| 78-59-1 | Isophorone | **C5 ppm | ||
| 4098-71-9 | Isophorone diisocyanate | 0.005 ppm | 0.015 ppm | |
| 109-59-1 | 2-Isopropoxyethanol | 25 ppm | 38 ppm | Skin |
| 108-21-4 | Isopropyl acetate | 100 ppm | 200 ppm | |
| 67-63-0 | Isopropyl alcohol | 200 ppm | 400 ppm | |
| 75-31-0 | Isopropylamine | 5 ppm | 10 ppm | |
| 768-52-5 | N-Isopropylaniline | 2 ppm | 4 ppm | Skin |
| 108-20-3 | Isopropyl ether | 250 ppm | 310 ppm | |
| 4016-14-2 | Isopropyl glycidyl ether (IGE) | 50 ppm | 75 ppm | |
| 1332-58-7 | Kaolin (respirable fraction) | 2 mg/m³ | 4 mg/m³ | |
| 8008-20-6; 64742-81-0 | Kerosene /Jet fuels, as total hydrocarbon vapour | 200 mg/m³ | 250 mg/m³ | Skin |
| 463-51-4 | Ketene | 0.5 ppm | 1.5 ppm | |
| 7439-92-1 | Lead and inorganic compounds, (as Pb) | 0.05 mg/m³ | 0.15 mg/m³ | Schedule R |
| 3687-31-8 | Lead arsenate, (as Pb3(AsO4)2) | 0.15 mg/m³ | 0.45 mg/m³ | |
| 7758-97-6 | Lead chromate, (as Pb) | 0.05 mg/m³ | 0.15 mg/m³ | Schedule R |
| 7758-97-6 | Lead chromate, (as Cr) | 0.0012 mg/m³ | 0.036 mg/m³ | Schedule R |
| 1317-65-3; 471-34-1 | Limestone (calcium carbonate) | 10 mg/m³ | 20 mg/m³ | |
| 58-89-9 | Lindane | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 7580-67-8 | Lithium hydride | 0.025 mg/m³ | 0.075 mg/m³ | |
| 68476-85-7 | L.P.G. (liquified petroleum gas) | See Aliphatic hydrocarbon gases [C1-C4] | ||
| 546-93-0 | Magnesite | 10 mg/m³ | 20 mg/m³ | |
| 1309-48-4 | Magnesium oxide (inhalable fraction) | 10 mg/m³ | 20 mg/m³ | |
| 121-75-5 | Malathion, (inhalable fraction and vapour) | 1 mg/m³ | 3 mg/m³ | Skin |
| 108-31-6 | Maleic anhydride | 0.1 ppm | 0.3 ppm | SEN |
| 7439-96-5 | Manganese and inorganic compounds, (as Mn) | 0.2 mg/m³ | 0.6 mg/m³ | |
| 12079-65-1 | Manganese cyclopentadienyl tricarbonyl, (as Mn) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 7439-97-6 | Mercury, (as Hg): | |||
| - | Alkyl compounds | 0.01 mg/m³ | 0.03 mg/m³ | Skin |
| - | Aryl compounds | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| - | Inorganic forms, including metallic mercury | 0.025 mg/m³ | 0.075 mg/m³ | Skin |
| 141-79-7 | Mesityl oxide | 15 ppm | 25 ppm | |
| 79-41-4 | Methacrylic acid | 20 ppm | 30 ppm | |
| 74-82-8 | Methane | See Aliphatic hydrocarbon gases [C1-C4] | ||
| 16752-77-5 | Methomyl | 2.5 mg/m³ | 5 mg/m³ | |
| 72-43-5 | Methoxychlor | 10 mg/m³ | 20 mg/m³ | |
| 109-86-4 | 2-Methoxyethanol (Methylcelloso lve-EGME) | 5 ppm | 8 ppm | Skin |
| 110-49-6 | 2-Methoxyethyl acetate (Methyl cellosolve acetate-EGMEA) | 5 ppm | 8 ppm | Skin |
| 150-76-5 | 4-Methoxyphenol | 5 mg/m³ | 10 mg/m³ | |
| 79-20-9 | Methyl acetate | 200 ppm | 250 ppm | |
| 74-99-7 | Methyl acetylene | 1000 ppm | 1250 ppm | |
| 59355-75-8 | Methyl acetylene-propadiene mixture (MAPP) | 1000 ppm | 1250 ppm | |
| 96-33-3 | Methyl acrylate | 2 ppm | 4 ppm | Skin, SEN |
| 126-98-7 | Methylacrylonitrile | 1 ppm | 2 ppm | Skin |
| 109-87-5 | Methylal (dimethoxy methane) | 1000 ppm | 1250 ppm | |
| 67-56-1 | Methyl alcohol (methanol) | 200 ppm | 250 ppm | Skin |
| 74-89-5 | Methylamine | 5 ppm | 15 ppm | |
| 110-43-0 | Methyl n-amyl ketone (2-Heptanone) | 50 ppm | 60 ppm | |
| 100-61-8 | N-Methylaniline | 0.5 ppm | 1 ppm | Skin |
| 74-83-9 | Methyl bromide | 1 ppm | 3 ppm | Skin |
| 596899 | Methyl tert-butyl ether (MTBE) | 50 ppm | 75 ppm | |
| 591-78-6 | Methyl n-butyl ketone | 5 ppm | 10 ppm | Skin |
| 74-87-3 | Methyl chloride | 50 ppm | 100 ppm | Skin |
| 137-05-3 | Methyl 2-cyanoacrylate | 0.2 ppm | 0.6 ppm | |
| 108-87-2 | Methylcyclohexane | 400 ppm | 500 ppm | |
| 25639-42-3 | Methylcyclohexanol | 50 ppm | 60 ppm | |
| 583-60-8 | o-Methylcyclohexanone | 50 ppm | 75 ppm | Skin |
| 12108-13-3 | 2-Methylcyclopentadienyl manganese tricarbonyl, (as Mn) | 0.2 mg/m³ | 0.6 mg/m³ | Skin |
| 2236015 | Methyl demeton | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 101-68-8 | Methylene bisphenyl isocyanate (MDI) | 0.005 ppm | 0.015 ppm | |
| 101-14-4 | 4,4’-Methylene bis (2-chloroaniline) (MBOCA, MOCA) | 0.01 ppm | 0.03 ppm | Skin, Schedule R |
| 5124-30-1 | Methylene bis (4-cyclohexylisocyanate) | 0.005 ppm | 0.015 ppm | |
| 75-09-2 | Methylene choride (dichloromethane) | 50 ppm | 63 ppm | |
| 101-77-9 | 4,4’-Methylene dianiline | 0.1 ppm | 0.3 ppm | Skin, Schedule R |
| 78-93-3 | Methyl ethyl ketone (MEK) | 200 ppm | 300 ppm | |
| 1338-23-4 | Methyl ethyl ketone peroxide | **C0.2 ppm | ||
| 107-31-3 | Methyl formate | 100 ppm | 150 ppm | |
| 60-34-4 | Methyl hydrazine | 0.01 ppm | 0.03 ppm | Skin, Schedule R |
| 74-88-4 | Methyl iodide | 2 ppm | 4 ppm | Skin, Schedule R |
| 110-12-3 | Methyl isoamyl ketone | 50 ppm | 60 ppm | |
| 108-11-2 | Methyl isobutyl carbinol | 25 ppm | 40 ppm | Skin |
| 108-10-1 | Methyl isobutyl ketone | 50 ppm | 75 ppm | |
| 624-83-9 | Methyl isocyanate | 0.02 ppm | 0.06 ppm | Skin |
| 563-80-4 | Methyl isopropyl ketone | 200 ppm | 250 ppm | |
| 74-93-1 | Methyl mercaptan | 0.5 ppm | 1.5 ppm | |
| 80-62-6 | Methyl methacrylate | 50 ppm | 100 ppm | SEN |
| 298-00-0 | Methyl parathion | 0.2 mg/m³ | 0.6 mg/m³ | Skin |
| 107-87-9 | Methyl propyl ketone | 200 ppm | 250 ppm | |
| 681-84-5 | Methyl silicate | 1 ppm | 2 ppm | |
| 98-83-9 | alpha-Methyl styrene | 50 ppm | 100 ppm | |
| 78-94-4 | Methyl vinyl ketone | **C0.2 ppm | Skin, SEN | |
| 21087-64-9 | Metribuzin | 5 mg/m³ | 10 mg/m³ | |
| 7786-34-7 | Mevinphos (inhalable fraction and vapour) | 0.01mg/m³ | 0.03 mg/m³ | Skin |
| 12001-26-2 | Mica (respirable fraction) | 3 mg/m³ | 6 mg/m³ | |
| 7439-98-7 | Molybdenum, (as Mo): | |||
| - | Soluble compounds, (respirable fraction) | 0.5 mg/m³ | 1.5 mg/m³ | |
| - | Metal and insoluble compounds, (inhalable fraction) | 10 mg/m³ | 20 mg/m³ | |
| - | Metal and insoluble compounds, (respirable fraction) | 3 mg/m³ | 6 mg/m³ | |
| 6923-22-4 | Monocrotophos (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 110-91-8 | Morpholine | 20 ppm | 30 ppm | Skin |
| 300-76-5 | Naled, (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | Skin, SEN |
| 91-20-3 | Naphthalene | 10 ppm | 15 ppm | Skin |
| 8006-14-2 | Natural gas | See Aliphatic hydrocarbon gases: Alkane [C1-C4] | ||
| 2595507 | Natural rubber latex (as total proteins), (inhalable fraction) | 0.001 mg/m³ | 0.003 mg/m³ | Skin, SEN |
| 36571 | Nickel, (as Ni): | |||
| - | Elemental (inhalable fraction) | 1.5 mg/m³ | 3 mg/m³ | Schedule R |
| - | Soluble inorganic compounds, (not otherwise specified) (inhalable fraction) | 0.1 mg/m³ | 0.3 mg/m³ | |
| - | Insoluble inorganic, (as not otherwise specified) (inhalable fraction) | 0.2 mg/m³ | 0.6 mg/m³ | |
| 12035-72-2 | Nickel subsulphide, (as Ni), (inhalable fraction) | 0.1 mg/m³ | 0.3 mg/m³ | Schedule R |
| 13463-39-3 | Nickel carbonyl, (as Ni) | 0.05 ppm | 0.15 ppm | |
| 54-11-5 | Nicotine | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 1929-82-4 | Nitrapyrin | 10 mg/m³ | 20 mg/m³ | |
| 7697-37-2 | Nitric acid | 2 ppm | 4 ppm | |
| 10102-43-9 | Nitric oxide | 25 ppm | 38 ppm | |
| 100-01-6 | p-Nitroaniline | 3 mg/m³ | 6 mg/m³ | Skin |
| 98-95-3 | Nitrobenzene | 1 ppm | 2 ppm | Skin |
| 100-00-5 | p-Nitrochlorobenzene | 0.1 ppm | 0.3 ppm | Skin |
| 79-24-3 | Nitroethane | 100 ppm | 125 ppm | |
| 10102-44-0 | Nitrogen dioxide | 3 ppm | 5 ppm | |
| 7783-54-2 | Nitrogen trifluoride | 10 ppm | 20 ppm | |
| 55-63-0 | Nitroglycerin (NG) | 0.05 ppm | 0.15 ppm | Skin |
| 75-52-5 | Nitromethane | 20 ppm | 30 ppm | |
| 108-03-2 | 1-Nitropropane | 25 ppm | 40 ppm | |
| 79-46-9 | 2-Nitropropane | 10 ppm | 20 ppm | Schedule R |
| 88-72-2; 99-08-1; 99-99-0 | Nitrotoluene isomers | 2 ppm | 3 ppm | Skin |
| 10024-97-2 | Nitrous oxide | 50 ppm | 75 ppm | |
| 111-84-2 | Nonane, all isomers | 200 ppm | 250 ppm | |
| 2234-13-1 | Octachloronaphthalene | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 111-65-9 | Octane, all isomers | 300 ppm | 375 ppm | |
| 8012-95-1 | Oil mist, mineral | 5 mg/m³ | 10 mg/m³ | |
| 20816-12-0 | Osmium tetroxide, (as Os) | 0.0002 ppm | 0.0006 ppm | |
| 144-62-7 | Oxalic acid | 1 mg/m³ | 2 mg/m³ | |
| 80-51-3 | p,p’-Oxybis(benzenesulphonyl hydrazide), (inhalable fraction) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 7783-41-7 | Oxygen difluoride | **C0.05 ppm | ||
| 10028-15-6 | Ozone | 0.05 ppm | 0.15 ppm | |
| 8002-74-2 | Paraffin wax fume | 2 mg/m³ | 4 mg/m³ | |
| 4685-14-7 | Paraquat, total dust | 0.5 mg/m³ | 1.5 mg/m³ | |
| - | Paraquat, (respirable fraction) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 56-38-2 | Parathion, (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| - | Particulate polycyclic aromatic hydrocarbons (PPAH), as benzene solubles, See Coal tar pitch volatiles | 0.2 mg/m³ | 0.6 mg/m³ | Schedule R |
| - | Particles (Insoluble or Poorly Soluble) Not Otherwise Specified: | |||
| - | Inhalable fraction | 10 mg/m³ | 20 mg/m³ | |
| - | Respirable fraction | 3 mg/m³ | 6 mg/m³ | |
| 19624-22-7 | Pentaborane | 0.005 ppm | 0.015 ppm | |
| 1321-64-8 | Pentachloronaphthalene | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 82-68-8 | Pentachloronitrobenzene | 0.5 mg/m³ | 1.5 mg/m³ | |
| 87-86-5 | Pentachlorophenol | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 115-77-5 | Pentaerythritol | 10 mg/m³ | 20 mg/m³ | |
| 78-78-4; 109-66-0; 463-82-1 | Pentane, all isomers | 600 ppm | 750 ppm | |
| 628-63-7; 626-38-0; 123-92-2; 625-16-1; 624-41-9; 620-11-1 | Pentyl acetate, all isomers | 50 ppm | 100 ppm | |
| 594-42-3 | Perchloromethyl mercaptan | 0.1 ppm | 0.3 ppm | |
| 7616-94-6 | Perchloryl fluoride | 3 ppm | 6 ppm | |
| 19430-93-4 | Perfluorobutyl ethylene | 100 ppm | 150 ppm | |
| 382-21-8 | Perfluoroisobutylene | **C0.01 ppm | ||
| 93763-70-3 | Perlite | 10 mg/m³ | 20 mg/m³ | |
| - | Persulphates, as persulphate | 0.1 mg/m³ | 0.3 mg/m³ | |
| 108-95-2 | Phenol | 5 ppm | 7.5 ppm | Skin |
| 92-84-2 | Phenothiazine | 5 mg/m³ | 10 mg/m³ | Skin |
| 95-54-5; 108-45-2; 106-50-3 | Phenylene diamine isomers | 0.1 mg/m³ | 0.3 mg/m³ | |
| 101-84-8 | Phenyl ether (vapour) | 1 ppm | 2 ppm | |
| 122-60-1 | Phenyl glycidyl ether (PGE) | 0.1 ppm | 0.3 ppm | Skin, SEN, Schedule R |
| 100-63-0 | Phenyl hydrazine | 0.1 ppm | 0.3 ppm | Skin, Schedule R |
| 108-98-5 | Phenyl mercaptan | 0.1 ppm | 0.3 ppm | Skin |
| 638-21-1 | Phenylphosphine | **C0.05 ppm | ||
| 298-02-2 | Phorate (inhalable fraction and vapour) | 0.05 mg/m³ | 0.2 mg/m³ | Ski |
| 75-44-5 | Phosgene (Carbonyl chloride) | 0.1 ppm | 0.3 ppm | |
| 7803-51-2 | Phosphine | 0.3 ppm | 1 ppm | |
| 7664-38-2 | Phosphoric acid | 1 mg/m³ | 3 mg/m³ | |
| 12185-10-3 | Phosphorus (yellow) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 10025-87-3 | Phosphorous oxychloride | 0.1 ppm | 0.3 ppm | |
| 10026-13-8 | Phosphorous pentachloride | 0.1 ppm | 0.3 ppm | |
| 1314-80-3 | Phosphorous pentasulphide | 1 mg/m³ | 3 mg/m³ | |
| 7719-12-2 | Phosphorous trichloride | 0.2 ppm | 0.5 ppm | |
| 85-44-9 | Phthalic anhydride | 1 ppm | 2 ppm | SEN |
| 626-17-5 | m-Phthalodinitrile | 5 mg/m³ | 10 mg/m³ | |
| 6606 | Picloram | 10 mg/m³ | 20 mg/m³ | |
| 88-89-1 | Picric acid | 0.1 mg/m³ | 0.3 mg/m³ | |
| 83-26-1 | Pindone | 0.1 mg/m³ | 0.3 mg/m³ | |
| 142-64-3 | Piperazine dihydrochloride | 5 mg/m³ | 10 mg/m³ | |
| 7778-18-9 | Plaster of Paris (Calcium sulphate) | 10 mg/m³ | 20 mg/m³ | |
| 38153 | Platinum: | |||
| - | metal | 1 mg/m³ | 3 mg/m³ | |
| - | soluble salt, (as Pt) | 0.002 mg/m³ | 0.006 mg/m³ | |
| 65997-15-1 | Portland cement | 10 mg/m³ | 20 mg/m³ | |
| 1310-58-3 | Potassium hydroxide | **C2 mg/m³ | ||
| 74-98-6 | Propane | See Aliphatic hydrocarbon gases [C1-C4] | ||
| 107-19-7 | Propargyl alcohol | 1 ppm | 3 ppm | Skin |
| 57-57-8 | beta-Propriolactone | 0.5 ppm | 1 ppm | Schedule R |
| 123-38-6 | Propionaldehyde | 20 ppm | 30 ppm | |
| 79-09-4 | Propionic acid | 10 ppm | 15 ppm | |
| 114-26-1 | Propoxur | 0.5 mg/m³ | 1.5 mg/m³ | |
| 109-60-4 | n-Propyl acetate | 200 ppm | 250 ppm | |
| 71-23-8 | Propyl alcohol (n-propanol) | 200 ppm | 400 ppm | |
| 78-87-5 | Propylene dichloride | 75 ppm | 110 ppm | |
| 6423-43-4 | Propylene glycol dinitrate | 0.05 ppm | 0.15 ppm | Skin |
| 107-98-2 | Propylene glycol monomethyl ether (PGME or 1-methoxy-2-propanol) | 100 ppm | 150 ppm | |
| 75-56-9 | Propylene oxide | 2 ppm | 4 ppm | SEN, Schedule R |
| 75-55-8 | Propylenimine | 2 ppm | 4 ppm | Skin, Schedule R |
| 627-13-4 | n-Propyl nitrate | 25 ppm | 40 ppm | |
| 8003-34-7 | Pyrethrum | 5 mg/m³ | 10 mg/m³ | |
| 110-86-1 | Pyridine | 1 ppm | 3 ppm | |
| 106-51-4 | Quinone | 0.1 ppm | 0.3 ppm | |
| 108-46-3 | Resorcinol | 10 ppm | 20 ppm | |
| 7440-16-6 | Rhodium, (as Rh): | |||
| - | Metal and insoluble compounds | 1 mg/m³ | 3 mg/m³ | |
| - | Soluble compounds | 0.01 mg/m³ | 0.03 mg/m³ | |
| 299-84-3 | Ronnel | 10 mg/m³ | 20 mg/m³ | |
| 83-79-4 | Rotenone (commercial) | 5 mg/m³ | 10 mg/m³ | |
| - | Rouge | 10 mg/m³ | 20 mg/m³ | |
| 8030-30-6 | Rubber solvent (Naphtha) | 400 ppm | 500 ppm | |
| 7782-49-2 | Selenium and compounds, (as Se) | 0.2 mg/m³ | 0.6 mg/m³ | |
| 7783-79-1 | Selenium hexafluoride, (as Se) | 0.05 ppm | 0.15 ppm | |
| 136-78-7 | Sesone | 10 mg/m³ | 20 mg/m³ | |
| - | Silica Amorphous: | |||
| 61790-53-2 | Diatomaceous earth (uncalcined) (inhalable fraction) | 10 mg/m³ | 20 mg/m³ | |
| 61790-53-2 | Diatomaceous earth (uncalcined) (respirable fraction) | 3 mg/m³ | 6 mg/m³ | |
| 112926-00-8 | Precipitated silica and silica gel | 10 mg/m³ | 20 mg/m³ | |
| 69012-46-2 | Silica, fume (respirable fraction) | 2 mg/m³ | ||
| 60676-86-0 | Silica, fused (respirable fraction) | 0.1 mg/m³ | ||
| - | Silica - Crystalline#: | |||
| 14464-46-1 | Cristobalite (respirable fraction) | 0.05 mg/m³ | ||
| 14808-60-7 | Quartz (respirable fraction) | 0.05 mg/m³ | Schedule R | |
| 1317-95-9 | Tripoli, as quartz (respirable fraction) | 0.1 mg/m³ | ||
| 7440-21-3 | Silicon | 10 mg/m³ | 20 mg/m³ | |
| 409-21-2 | Silicon Carbide | |||
| - | Nonfibrous, (inhalable fraction) | 10 mg/m³ | 20 mg/m³ | |
| - | Nonfibrous, (respirable fraction) | 3 mg/m³ | 6 mg/m³ | |
| - | Fibrous (including whiskers), (respirable fibres) | 0.1 f/cc## | Schedule R | |
| 7803-62-5 | Silicon tetrahydride (Silane) | 5 ppm | 10 ppm | |
| 7440-22-4 | Silver, metal | 0.1 mg/m³ | 0.3 mg/m³ | |
| - | Silver soluble compounds, (as Ag) | 0.01 mg/m³ | 0.03 mg/m³ | |
| - | Soapstone (total dust) | 6 mg/m³ | ||
| - | Soapstone (respirable fraction) | 3 mg/m³ | 6 mg/m³ | |
| 26628-22-8 | Sodium azide: | |||
| - | as Sodium azide | **C0.29 mg/m³ | ||
| - | as Hydrazoic acid vapour | **C0.11 ppm | ||
| 7631-90-5 | Sodium bisulphite | 5 mg/m³ | 10 mg/m³ | |
| 62-74-8 | Sodium fluoroacetate | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 1310-73-2 | Sodium hydroxide | **C2 mg/m³ | ||
| 7681-57-4 | Sodium metabisulphite | 5 mg/m³ | 10 mg/m³ | |
| 9005-25-8 | Starch | 10 mg/m³ | 20 mg/m³ | |
| - | Stearates | 10 mg/m³ | 20 mg/m³ | |
| 7803-52-3 | Stibine (Antimony hydride) | 0.1 ppm | 0.3 ppm | |
| 8052-41-3 | Stoddard solvent | 100 ppm | 125 ppm | |
| 2151065 | Strontium chromate, (as Cr) | 0.0005 mg/m³ | 0.0015 mg/m³ | Schedule R |
| 57-24-9 | Strychnine | 0.15 mg/m³ | 0.45 mg/m³ | |
| 100-42-5 | Styrene, monomer | 20 ppm | 40 ppm | Schedule R |
| 1395-21-7; 9014-01-1 | Subtilisins, (as crystalline active enzyme) | **C0.00006 mg/m³ | ||
| 57-50-1 | Sucrose | 10 mg/m³ | 20 mg/m³ | |
| 3689-24-5 | Sulphotep (TEDP) (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 38616 | Sulphur dioxide | 2 ppm | 5 ppm | |
| 2551-62-4 | Sulphur hexafluoride | 1000 ppm | 1250 ppm | |
| 7664-93-9 | Sulphuric acid, (thoracic fraction) | 0.2 mg/m³ | 0.6 mg/m³ | Schedule R, strong acid mists only |
| 10025-67-9 | Sulphur monochloride | **C1 ppm | ||
| 5714-22-7 | Sulphur pentafluoride | **C0.01 ppm | ||
| 7783-60-0 | Sulphur tetrafluoride | **C0.1 ppm | ||
| 2699-79-8 | Sulphuryl fluoride 5 ppm | 5 ppm | 10 ppm | |
| 35400-43-2 | Sulprofos | 1 mg/m³ | 3 mg/m³ | |
| - | Synthetic Vitreous Fibres: | |||
| - | Continous filament glass fibres, (respirable fibres) | 1 f/cc## | 3 f/cc | |
| - | Continous filament glass fibres, (inhalable fraction) | 5 mg/m³ | 10 mg/m³ | |
| - | Glass wool fibres, (respirable fibres) | 1 f/cc | 3 f/cc | |
| - | Rock wool fibres, (respirable fibres) | 1 f/cc | 3 f/cc | |
| - | Slag wool fibres, (respirable fibres) | 1 f/cc | 3 f/cc | |
| - | Special purpose glass fibres, (respirable fibres) | 1 f/cc | 3 f/cc | |
| - | Refractory ceramic fibres, (respirable fibres) | 0.2 f/cc | Schedule R | |
| 93-76-5 | 2,4,5-T | 10 mg/m³ | 20 mg/m³ | |
| 14807-96-6 | Talc, (respirable fraction) | 2 mg/m³ | ||
| 7440-25-7 | Tantalum metal and oxide, (as Ta) | 5 mg/m³ | 10 mg/m³ | |
| 7783-80-4 | Tellurium hexafluoride, (as Te) | 0.02 ppm | 0.03 ppm | |
| 13494-80-9 | Tellurium and other tellurium compounds, (as Te) excluding hydrogen telluride | 0.1 mg/m³ | 0.3 mg/m³ | |
| 3383-96-8 | Temephos, (inhalable fraction and vapour) | 1 mg/m³ | 3 mg/m³ | Skin |
| 13071-79-9 | Terbufos, (inhalable fraction and vapour) | 0.01 mg/m³ | 0.03 mg/m³ | Skin |
| 100-21-0 | Terephthalic acid | 10 mg/m³ | 20 mg/m³ | |
| 26140-60-3 | Terphenyls | **C5 mg/m³ | ||
| 76-11-9 | 1,1,1,2-Tetrachloro-2,2-difluoroethane | 500 ppm | 625 ppm | |
| 76-12-0 | 1,1,2,2-Tetrachloro-1,2-difluoroethane | 500 ppm | 625 ppm | |
| 79-34-5 | 1,1,2,2-Tetrachloroethane | 1 ppm | 2 ppm | Skin |
| 127-18-4 | Tetrachloroethylene (Perchloroethylene) | 25 ppm | 100 ppm | Schedule R |
| 1335-88-2 | Tetrachloronaphthalene | 2 mg/m³ | 4 mg/m³ | |
| 78-00-2 | Tetraethyl lead, (as Pb) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 107-49-3 | Tetraethyl pyrophosphate (TEPP) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 116-14-3 | Tetrafluoroethylene | 2 ppm | 4 ppm | Schedule R |
| 109-99-9 | Tetrahydrofuran | 50 ppm | 100 ppm | Skin |
| - | Tetrakis (hydroxymethyl) phosphonium salts: | |||
| 124-64-1 | Tetrakis (hydroxymethyl) phosphonium chloride | 2 mg/m³ | 4 mg/m³ | |
| 55566-30-8 | Tetrakis (hydroxymethyl) phosphonium sulphate | 2 mg/m³ | 4 mg/m³ | SEN |
| 75-74-1 | Tetramethyl lead, (as Pb) | 0.15 mg/m³ | 0.45 mg/m³ | Skin |
| 3333-52-6 | Tetramethyl succinonitrile | 0.5 ppm | 1 ppm | Skin |
| 509-14-8 | Tetranitromethane | 0.005 ppm | 0.015 ppm | Schedule R |
| 7722-88-5 | Tetrasodium pyrophosphate | 5 mg/m³ | 10 mg/m³ | |
| 479-45-8 | Tetryl (2,4,6-trinitrophenyl-methyl nitramine) | 1.5 mg/m³ | 3 mg/m³ | |
| 7440-28-0 | Thallium and soluble compounds, (as Tl) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 96-69-5 | 4,4’-Thiobis (6-tert-butyl-m-cresol) | 10 mg/m³ | 20 mg/m³ | |
| 68-11-1 | Thioglycolic acid | 1 ppm | 2 ppm | Skin |
| 2125594 | Thionyl chloride | **C1 ppm | ||
| 137-26-8 | Thiram | 1 mg/m³ | 3 mg/m³ | |
| 7440-31-5 | Tin, (as Sn): | |||
| - | metal | 2 mg/m³ | 4 mg/m³ | |
| - | oxide and inorganic compounds except SnH4 | 2 mg/m³ | 4 mg/m³ | |
| - | organic compounds | 0.1 mg/m³ | 0.2 mg/m³ | Skin |
| 13463-67-7 | Titanium dioxide | 10 mg/m³ | 20 mg/m³ | |
| 108-88-3 | Toluene (toluol) | 50 ppm | 60 ppm | Skin |
| 584-84-9; 91-08-7 | Toluene-2,4- or 2,6-diisocyanate (TDI) | 0.005 ppm | 0.02 ppm | SEN |
| 95-53-4 | o-Toluidine | 2 ppm | 4 ppm | Skin, Schedule R |
| 108-44-1 | m-Toluidine | 2 ppm | 4 ppm | Skin |
| 106-49-0 | p-Toluidine | 2 ppm | 4 ppm | Skin, Schedule R |
| 126-73-8 | Tributyl phosphate | 0.2 ppm | 0.4 ppm | |
| 76-03-9 | Trichloroacetic acid | 1 ppm | 2 ppm | |
| 120-82-1 | 1,2,4-Trichlorobenzene | **C5 ppm | ||
| 71-55-6 | 1,1,1-Trichloroethane | 350 ppm | 450 ppm | |
| 79-00-5 | 1,1,2-Trichloroethane | 10 ppm | 15 ppm | Skin |
| 79-01-6 | Trichloroethylene | 50 ppm | 100 ppm | |
| 75-69-4 | Trichlorofluoromethane | **C1000 ppm | ||
| 1321-65-9 | Trichloronaphthalene | 5 mg/m³ | 10 mg/m³ | Skin |
| 96-18-4 | 1,2,3-Trichloropropane | 10 ppm | 15 ppm | Skin |
| 76-13-1 | 1,1,2-Trichloro-1,2,2-trifluoroethane | 1000 ppm | 1250 ppm | |
| 52-68-6 | Trichlorphon, (inhalable fraction) | 1 mg/m³ | 3 mg/m³ | |
| 102-71-6 | Triethanolamine | 5 mg/m³ | 10 mg/m³ | |
| 121-44-8 | Triethylamine | 1 ppm | 3 ppm | Skin |
| 75-63-8 | Trifluorobromomethane | 1000 ppm | 1200 ppm | |
| 2451-62-9 | 1,3,5-Triglycidyl-s-triazinetrione | 0.05 mg/m³ | 0.15 mg/m³ | |
| 552-30-7 | Trimellitic anhydride | **C0.04 mg/m³ | ||
| 75-50-3 | Trimethylamine | 5 ppm | 15 ppm | |
| 25551-13-7 | Trimethyl benzene (mixed isomer) | 25 ppm | 30 ppm | |
| 121-45-9 | Trimethyl phosphite | 2 ppm | 4 ppm | |
| 118-96-7 | 2,4,6-Trinitrotoluene (TNT) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 78-30-8 | Triorthocresyl phosphate | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 603-34-9 | Triphenylamine | 5 mg/m³ | 10 mg/m³ | |
| 115-86-6 | Triphenyl phosphate | 3 mg/m³ | 6 mg/m³ | |
| 7440-33-7 | Tungsten, (as W): | |||
| - | metal and insoluble compounds | 5 mg/m³ | 10 mg/m³ | |
| - | soluble compounds | 1 mg/m³ | 3 mg/m³ | |
| 8006-64-2; 80-56-8; 127-91-3; 13466-78-9 | Turpentine and selected monoterpenes | 20 ppm | 30 ppm | SEN |
| 7440-61-1 | Uranium (natural) | |||
| - | Soluble and insoluble compounds, (as U) | 0.2 mg/m³ | 0.6 mg/m³ | Schedule R |
| 110-62-3 | n-Valeraldehyde | 50 ppm | 60 ppm | |
| 1314-62-1 | Vanadium pentoxide, as V2O5, dust and fume (respirable fraction) | 0.05 mg/m³ | 0.15 mg/m³ | |
| - | Vegetable oil mists | 10 mg/m³ | 20 mg/m³ | |
| 108-05-4 | Vinyl acetate | 10 ppm | 15 ppm | |
| 593-60-2 | Vinyl bromide | 0.5 ppm | 1.5 ppm | Schedule R |
| 100-40-3 | 4-Vinyl cyclohexene | 0.1 ppm | 0.3 ppm | Schedule R |
| 106-87-6 | Vinyl cyclohexene dioxide | 0.1 ppm | 0.3 ppm | Skin, Schedule R |
| 75-02-5 | Vinyl fluoride | 1 ppm | 3 ppm | Schedule R |
| 88-12-0 | N-Vinyl-2-pyrrolidone | 0.05 ppm | 0.15 ppm | |
| 75-35-4 | Vinylidene chloride | 5 ppm | 10 ppm | |
| 75-38-7 | Vinyledene fluoride | 500 ppm | 625 ppm | |
| 25013-15-4 | Vinyl toluene | 50 ppm | 100 ppm | |
| 8032-32-4 | VM and P Naphtha | 300 ppm | 375 ppm | |
| 81-81-2 | Warfarin | 0.1 mg/m³ | 0.3 mg/m³ | |
| - | Welding fumes | 5 mg/m³ | 10 mg/m³ | |
| - | Wood dust: | |||
| - | Softwoods | 5 mg/m³ | 10 mg/m³ | Schedule R (certain species), SEN* (certai n species, see list at end of table) |
| - | Certain hardwoods such as beech and oak | 1 mg/m³ | 3 mg/m³ | Schedule R (certain species), SEN* (certai n species, see list at end of table) |
| 1330-20-7; 95-47-6; 108-38-3; 106-42-3 | Xylene (o, m-, p-isomers) | 100 ppm | 150 ppm | |
| 1477-55-0 | m-Xylene alpha, alpha’-diamine | **C0.1 mg/m³ | Skin | |
| 1300-73-8 | Xylidine, mixed isomers (inhalable fraction and vapour) | 0.5 ppm | 1 ppm | Schedule R, Skin |
| 7440-65-5 | Yttrium metal and compounds, (as Y) | 1 mg/m³ | 3 mg/m³ | |
| 7646-85-7 | Zinc chloride fume | 1 mg/m³ | 2 mg/m³ | |
| 13530-65-9; 11103-86-9; 37300-23-5 | Zinc chromates, as Cr | 0.01 mg/m³ | 0.03 mg/m³ | Schedule R |
| 1314-13-2 | Zinc oxide, fume and dust (respirable fraction) | 2 mg/m³ | 10 mg/m³ | |
| 7440-67-7 | Zirconium and compounds, (as Zr) | 5 mg/m³ | 10 mg/m³ | |
Notes:
*"CAS" means the Chemical Abstracts Service Division of the American Chemical Society
**mg/m3 or ppm means milligrams of substance per cubic metre of air; ppm - parts (volume) of substance per million parts (volume) of air
**C - ceiling limit
# - Trydimite removed
## - Fibres per cubic centimetre of air
+ - Explanation of Notations:
Schedule Q - Substance is also listed in Schedule Q and subject to sections to referred to in that Schedule
Skin - Potentially harmful after absorption through the skin or mucous membranes
SEN - Well demonstrated potential to produce sensitization
SEN* - Wood species suspected of inducing sensitization (see Table D)
A Table
| Inhalable fraction: | |
| For the application of this limit, inhalable fraction is that fraction of the aerosol that passes a size selector with the following characteristics: | |
| Particle Aerodynamic Diameter (μm) | Inhalable Particulate Mass (IPM) (%) |
| 100 | |
| 1 | 97 |
| 2 | 94 |
| 5 | 87 |
| 10 | 77 |
| 20 | 65 |
| 30 | 58 |
| 40 | 54.5 |
| 50 | 52.5 |
| 100 | 50 |
B Table
| Respirable fraction: | |
| For the application of this limit, respirable fraction is that fraction of the aerosol that passes a size selector with the following characteristics: | |
| Particle Aerodynamic Diameter (μm) | Respirable Particulate Mass (RPM) (%) |
| 0 | 100 |
| 1 | 97 |
| 2 | 91 |
| 3 | 74 |
| 4 | 50 |
| 5 | 30 |
| 6 | 17 |
| 7 | 9 |
| 8 | 5 |
| 10 | 1 |
C Table
| Thoracic fraction: | |
| For the application of this limit, thoracic fraction is that fraction of the aerosol that passes a size selector with the following characteristics: | |
| Particle Aerodynamic Diameter (μm) | Thoracic Particulate Mass (TPM)(%) |
| 0 | 100 |
| 2 | 94 |
| 4 | 89 |
| 6 | 80.5 |
| 8 | 67 |
| 10 | 50 |
| 12 | 35 |
| 14 | 23 |
| 16 | 15 |
| 18 | 9.5 |
| 20 | 6 |
| 25 | 2 |
D Table
| Commercially Important Tree Species Suspected of Inducing Sensitization | ||
| Wood Type | Common | Latin |
| Softwood | California redwood | Sequoia sempervirens |
| Eastern white cedar | Thuja occidentalis | |
| Pine | Pinus | |
| Western red cedar | Thuja plicata | |
| Hardwood | Ash | Fraxinus americana |
| Aspen/Poplar/Cottonwood | Popilus | |
| Beech | Fagus | |
| Oak | Quercus | |
| Tropical Wood | Abirucana | Pouteria |
| African zebra | Microberlinia | |
| Antiaris | Antiaris africana Antiaris toxicara | |
| Cabreuva | Myrocarpus fastigiatus | |
| Cedar of Lebanon | Cedra libani | |
| Central American walnut | Juglans olanchana | |
| Cocabolla | Dalbergia retusa | |
| African ebony | Diospryos crassiflora | |
| Fernam bouc | Caesalpinia | |
| Honduras rosewood | Dalbergia stevensonii | |
| Iroko or kambala | Chlorophora excelsa | |
| Kejaat | Pterocarpus angolensis | |
| Kotobe | Nesorgordonia papaverifera | |
| Limba | Terminalia superba | |
| Mahogany (African) | Khaya spp. | |
| Makore | Tieghemella heckelii | |
| Mansonia/Beté | Mansonia altissima | |
| Nara | Pterocarpus indicus | |
| Obeche/African maple/Samba | Triplochiton scleroxylon | |
| Palisander/Brazilian rosewood/ Tulip wood/Jakaranda | Dalbergia nigra | |
| Pau marfim | Balfourdendron riedelianum | |
| Ramin | Gonystylus bancanus | |
| Soapbark dust | Quillaja saponaria | |
| Spindle tree wood | Euonymus europaeus | |
Schedule R Designated Chemical and Biological Substances
1. Any mixture containing less than 1% of any chemical substance listed in Schedule Q.
2. Any of the following chemical substances:
Table
| CAS* NUMBER | CHEMICAL SUBSTANCE |
| 75-07-0 | Acetaldehyde |
| 60-35-5 | Acetamide |
| 79-06-1 | Acrylamide |
| 107-13-1 | Acrylonitrile |
| 1402-68-2 | Aflatoxins |
| 60-09-3 | para-Aminoazobenzene |
| 97-56-3 | ortho-Aminoazotoluene |
| 712-68-5 | 2-Amino-5(5-nitro-2-furyl)-1,3, 4-thiadiazole |
| 61-82-5 | Amitrole |
| 90-04-0 | ortho-Anisidine |
| 1309-64-4 | Antimony trioxide |
| 7440-38-2 | Arsenic and arsenic mixtures |
| 1332-21-4 | Asbestos |
| 1912-24-9 | Atrazine |
| 151-56-4 | Aziridine |
| 98-87-3 | Benzal chloride |
| 71-43-2 | Benzene |
| - | Benzidine-based dyes |
| 271-89-6 | Benzofuran |
| 98-07-7 | Benzotrichloride |
| 98-88-4 | Benzoyl chloride |
| 100-44-7 | Benzyl chloride |
| 618966 | Benzyl violet 4B |
| - | Beryllium and beryllium compounds |
| 75-27-4 | Bromodichloromethane |
| 3296-90-0 | 2,2-bis(bromomethyl)propane-1,3,-diol |
| 106-99-0 | 1,3-Butadiene |
| 3068-88-0 | beta-Butyrolactone |
| 25013-16-5 | Butylated hydroxyanisole |
| - | Cadmium and cadmium compounds |
| 191905 | Captafol |
| 56-23-5 | Carbon tetrachloride |
| 2593402 | Carrageenan, degraded |
| - | Chlordane isomers |
| 115-28-6 | Chlorendic acid |
| - | Chlorinated paraffins |
| 106-47-8 | para-chloroaniline |
| 67-66-3 | Chloroform |
| 95-57-8 | 2-Chlorophenol |
| 108-43-0 | 3-Chlorophenol |
| 106-48-9 | 4-Chlorophenol |
| 95-83-0 | 4-Chloro-ortho-phenylenediamine |
| 95-69-2 | para-Chloro-ortho-toluidine |
| 1897-45-6 | Chlorothalonil |
| - | Chromium compounds, hexavalent |
| 6459-94-5 | CI Red 114 |
| 569-61-9 | CI Basic Red 9 |
| 2429-74-5 | CI Direct Blue 15 |
| 6358-53-8 | Citrus Red 2 |
| 8007-45-2 | Coal-tar pitches |
| 8007-45-2 | Coal-tars |
| - | Cobalt and cobalt compounds |
| 8001-58-9 | Creosotes |
| 120-71-8 | para-Cresidine |
| 4748733 | Cycasin |
| - | DDT and isomers |
| 613-35-4 | N,N’-Diacetylbenzidine |
| 615-05-4 | 2,4-Diaminoanisole |
| 101-80-4 | 4,4’-Diaminodiphenyl ether |
| 95-80-7 | 2,4-Diaminotoluene |
| 334-88-3 | Diazomethane |
| 226-36-8; 224-42-0 | Dibenzacridine |
| 96-12-8 | 1,2-Dibromo-3-chloropropane |
| 79-43-6 | Dichloroacetic acid |
| 106-46-7 | para-Dichlorobenzene |
| 764-41-0 | 1,4-Dichloro-2-butene |
| 107-06-2 | 1,2-Dichloroethane |
| 75-09-2 | Dichloromethane |
| 542-75-6 | 1,3-Dichloropropene (technical grade) |
| 62-73-7 | Dichlorovos |
| 1464-53-5 | Diepoxybutane |
| 117-81-7 | Di(2-ethylhexyl)phthalate |
| - | Diesel engine exhaust |
| 1615-80-1 | 1,2-Diethylhydrazine |
| 64-67-5 | Diethyl sulphate |
| 101-90-6 | Diglycidyl resorcinol ether |
| 2973-10-6 | Diisopropyl sulphate |
| 79-44-7 | Dimethylcarbamoyl chloride |
| 68-12-2 | Dimethylformamide |
| 57-14-7 | 1,1-Dimethylhydrazine |
| 540-73-8 | 1,2-Dimethylhydrazine |
| 77-78-1 | Dimethyl sulphate |
| - | Dinitropyrenes |
| 25321-14-6 | Dinitrotoluene |
| 123-91-1 | 1,4-Dioxane |
| 2475-48-8 | Disperse blue |
| 106-89-8 | Epichlorohydrin |
| 106-88-7 | 1,2-Epoxybutane |
| 66733-21-9 | Erionite |
| 140-88-5 | Ethyl acrylate |
| 74-96-4 | Ethyl bromide |
| 106-93-4 | Ethylene dibromide |
| 75-21-8 | Ethylene oxide |
| 96-45-7 | Ethylene thiourea |
| 62-50-0 | Ethyl methanesulphonate |
| 759-73-9 | N-Ethyl-N-nitrosourea |
| 50-00-0 | Formaldehyde |
| 3570-75-0 | 2-(2-Formylhydrazino)-4(5-nitro-2-furyl)thiazole |
| - | Gasoline |
| 765-34-4 | Glycidaldehyde |
| 2784-94-3 | HC Blue 1 |
| 76-44-8 | Heptachlor |
| 118-74-1 | Hexachlorobenzene |
| 87-68-3 | Hexachlorobutadiene |
| 608-73-1 | Hexachlorocyclohexanes |
| 67-72-1 | Hexachloroethane |
| 680-31-9 | Hexamethylphosphoramid |
| 302-01-2 | Hydrazine |
| 22398-80-7 | Indium phosphide |
| 193-39-5 | Indone[1,2,3-cd]pyrene |
| 78-79-5 | Isoprene |
| 143-50-0 | Kepone |
| - | Lead (compounds), inorganics |
| 632-99-5 | Magenta (contains CI Basic Red 9) |
| - | Marine diesel fuels |
| 484-20-8 | 5-Methoxypsoralen |
| 75-55-8 | 2-Methylaziridine |
| 101-14-4 | 4,4’-Methylene bis(2-chloroaniline) |
| 838-88-0 | 4,4’-Methylene bis(2-methylaniline) |
| 101-77-9 | 4,4’-Methylene dianiline |
| 60-34-4 | Methyl hydrazine |
| 74-88-4 | Methyl iodide |
| - | Methylmercury Compounds |
| 66-27-3 | Methyl methanesulphonate |
| 129-15-7 | 2-Methyl-1-nitroanthraquinone |
| 684-93-5 | N-Methyl-N-nitrosourea |
| 615-53-2 | N-Methyl-N-nitrosourethane |
| 8012-95-1 | Mineral oils, untreated and mildly treated |
| 2385-85-5 | Mirex |
| 50-60-2 | Mustard gas |
| - | Nickel (compounds) |
| 12035-72-2 | Nickel subsulphide |
| - | Nitrilotriacetic acid and its salts |
| 1836-75-5 | Nitrofen (technical grade) |
| 607-57-8 | 2-Nitrofluorene |
| 555-84-0 | 1-[(5-Nitrofurfurylidene)amino]2-imidazolidinone |
| 51-75-2 | Nitrogen mustard |
| 79-46-9 | 2-Nitropropane |
| 5522-43-0; 57835-92-4 | Nitropyrene isomers |
| 924-16-3 | N-Nitrosodi-n-butylamine |
| 1116-54-7 | N-Nitrosodiethanolamine |
| 55-18-5 | N-Nitrosodiethylamine |
| 62-75-9 | N-Nitrosodimethylamine |
| 621-64-7 | N-Nitrosodi-N-propylamine |
| 4549-40-0 | N-Nitrosomethylvinylamine |
| 59-89-2 | N-Nitrosomorpholine |
| 16543-55-8 | N-Nitrosonornicotine |
| 100-75-4 | N-Nitrosopiperidine |
| 930-55-2 | N-Nitrosopyrrolidine |
| 13256-22-9 | N-Nitrososarcosine |
| 2646-17-5 | Oil orange SS |
| 12174-11-7 | Palygorskite (attapulgite) (long fibres, > 5 microns) |
| - | Penta/hexa cyclic unsubstituted aromatic hydrocarbons |
| 135-88-6 | N-Phenyl-beta-naphthylamine |
| 95-54-5 | o-Phenylenediamine |
| 122-60-1 | Phenylglycidyl ether |
| 100-63-0 | Phenylhydrazine |
| 12584427 | Polybrominated biphenyls |
| 1336-36-3 | Polychlorinated biphenyls |
| 3564-908; 3761-53-3 | Ponceau 3R |
| 2139591 | Potassium bromate |
| 1120-71-4 | 1,3-Propane sultone |
| 57-57-8 | ß-Propiolactone |
| 75-55-8 | Propylene imine |
| 75-56-9 | Propylene oxide |
| - | Refractory ceramic fibres |
| - | Residual fuel oils (heavy fuel oils) |
| 94-59-7 | Safrole |
| 68308-34-9 | Shale-oils |
| - | Silica crystalline (respirable size) |
| 409-21-2 | Silicon carbide, fibrous (including whiskers) |
| 132-27-4 | Sodium ortho-phenylphenate |
| - | Soots from pyrolysis of heating fuels |
| 100-42-5 | Styrene |
| 96-09-3 | Styrene-7,8-oxide |
| 95-06-7 | Sulphallate |
| - | Sulphuric acid (strong acid mist exposure, only) |
| 637719 | 2,3,7,8-Tetrachlorodibenzo-para-dioxin |
| 127-18-4 | Tetrachloroethylene |
| 116-14-3 | Tetrafluoroethylene |
| 509-14-8 | Tetranitromethane |
| 62-55-5 | Thioacetamide |
| 139-65-1 | Thiodianiline |
| 141-90-2 | Thiouracil |
| 62-56-6 | Thiourea |
| 119-93-7 | ortho-Tolidine |
| 584-84-9 | Toluene diisocyanates |
| 95-53-4 | ortho-Toluidine |
| 106-49-0 | para-Toluidine |
| 8001-35-2 | Chlorinated camphene |
| 52-24-4 | Tris(1-aziridinyl)phosphine sulphide |
| 126-72-7 | Tris(2,3-dibromopropyl)phosphate |
| 72-57-1 | Trypan Blue |
| - | Uranium, (natural) soluble and insoluble compounds |
| 51-79-6 | Urethane |
| 108-05-4 | Vinyl acetate |
| 593-60-2 | Vinyl bromide |
| 100-40-3 | 4-Vinyl cyclohexene |
| 106-87-6 | Vinyl cyclohexene dioxide |
| 75-02-5 | Vinyl fluoride |
| - | Wood dusts (Oak, Beech, Birch, Mahogany, Teak and Walnut) |
| 13530-65-9; 11103-86-9; 37300-23-5 | Zinc chromates |
| 1300-73-8 | Xylidine isomers |
*"CAS" means the Chemical Abstracts Service Division of the American Chemical Society
SAFETY ACT
R.S.N.W.T. 1988, c. S-1
HEALTH AND SAFETY
Section 4 Duty of employer
4. (1) Every employer shall
(a) maintain his or her establishment in such a manner that the health and safety of persons in the establishment are not likely to be endangered;
(b) take all reasonable precautions and adopt and carry out all reasonable techniques and procedures to ensure the health and safety of every person in his or her establishment; and
(c) provide the first aid service requirements set out in the regulations pertaining to his or her class of establishment.
(2) If two or more employers have charge of an establishment, the principal contractor or, if there is no principal contractor, the owner of the establishment, shall coordinate the activities of the employers in the establishment to ensure the health and safety of persons in the establishment.
[S.N.W.T. 2003, c. 25, s. 3]
Occupational Health and Safety Regulations
R-003-2016
Part 1 PRELIMINARY MATTERS
Section 5 Codes of practice
5. The Chief Safety Officer may consult with industry and others prior to approving and issuing a code of practice under subsection 18(3) of the Act.
Part 2 REPORTING
Section 10 Medical information
10. (1) Subject to subsection (2), a person who acquires information of a personal medical nature with respect to a worker shall not disclose that information unless the disclosure is
(a) to the worker;
(b) with the informed consent of the worker, to another person; or
(c) otherwise required by law.
(2) A medical professional who attends or treats a worker who is suffering from or is believed to be suffering from a medical condition that is listed in Schedule F and is related to the worker’s present or past work shall, as soon as is reasonably possible, inform the Chief Safety Officer of
(a) the medical condition from which the worker is suffering or is believed to be suffering; and
(b) the name and address of the most recent work site where exposure related to the medical condition is believed to have occurred.
Part 3 GENERAL DUTIES
Section 12 General Duties of Employers
12. An employer shall, in respect of a work site,
(a) provide and maintain systems of work and working environments that ensure, as far as is reasonably possible, the health and safety of workers;
(b) arrange for the use, handling, storage and transport of articles and substances in a manner that protects the health and safety of workers;
(c) provide information, instruction, training and supervision that is necessary to protect the health and safety of workers; and
(d) provide and maintain a safe means of entrance to and exit from the work site.
Part 7 PERSONAL PROTECTIVE EQUIPMENT
Section 90 General responsibilities
90. (1) An employer who is required by these regulations to provide personal protective equipment to a worker shall
(a) provide approved personal protective equipment for use by the worker at no cost to the worker;
(b) ensure that the personal protective equipment is used by the worker;
(c) ensure that the personal protective equipment is at the work site before work begins;
(d) ensure that the personal protective equipment is stored in a clean, secure location that is readily accessible to the worker;
(e) ensure that the worker is
(i) aware of the location of the personal protective equipment, and
(ii) trained in its use;
(f) inform the worker of the reasons why the personal protective equipment is required to be used and of the limitations of its protection; and
(g) ensure that personal protective equipment provided to the worker is
(i) suitable and adequate and a proper fit for the worker,
(ii) maintained and kept in a sanitary condition, and
(iii) removed from use or service when damaged.
(2) If an employer requires a worker to clean and maintain personal protective equipment, the employer shall ensure that the worker has adequate time to do so during normal working hours without loss of pay or benefits.
(3) If reasonably possible, an employer shall make appropriate adjustments to the work procedures and the rate of work to eliminate or reduce any danger or discomfort to the worker that could arise from the worker’s use of personal protective equipment.
(4) A worker who is provided with personal protective equipment by an employer shall
(a) use the personal protective equipment; and
(b) take reasonable steps to prevent damage to the personal protective equipment.
(5) If personal protective equipment provided to a worker becomes defective or otherwise fails to provide the protection it is intended for, the worker shall
(a) return the personal protective equipment to the employer; and
(b) inform the employer of the defect or other reason why the personal protective equipment does not provide the protection that it was intended to provide.
(6) An employer shall immediately repair or replace any personal protective equipment returned to the employer under paragraph (5)(a).
Part 21 CHEMICAL AND BIOLOGICAL SUBSTANCES
Section 309 Interpretation
309. (1) An employer shall, at a work site,
(a) monitor the use or presence of, or a worker’s exposure to, harmful or hazardous chemical or biological substances;
(b) if reasonably possible, substitute less harmful or hazardous chemical or biological substances for harmful or hazardous chemical or biological substances;
(c) subject to subsection 314(1), to the extent that is reasonably possible, reduce contamination of the work site by harmful or hazardous chemical or biological substances; and
(d) develop and implement work procedures and processes that are as safe as is reasonably possible for the handling, use, storage, production and disposal of harmful or hazardous chemical or biological substances.
(2) An employer shall take steps, to the extent that is reasonably possible, to prevent exposure of workers to
(a) harmful or hazardous chemical or biological substances; or
(b) chemical or biological substances in combination or association with other harmful or hazardous chemical or biological substances.
(3) An employer shall
(a) inform workers of the nature and degree of the effects to their health or safety of exposure to harmful or hazardous chemical or biological substances; and
(b) provide workers with adequate training in
(i) work procedures and processes developed under paragraph (1)(d), and
(ii) the proper use of personal protective equipment required by these regulations.
(4) An employer shall make available to the Committee or representative
(a) results of measurements of worker exposure to, and contamination of a work site by, harmful or hazardous chemical or biological substances; and
(b) a description of steps taken to reduce the contamination of a work site by, and eliminate or reduce exposure of the workers to, harmful or hazardous chemical or biological substances.
Section 310 List of chemical and biological substances
310. (1) An employer shall, in consultation with the Committee or representative,
(a) develop and maintain a list of harmful and hazardous chemical or biological substances that are regularly handled, used, stored, produced or disposed of in the course of work processes or that are otherwise present at a work site; and
(b) identify on the list referred to in paragraph (a) those chemical substances that are controlled products.
(2) The employer shall
(a) amend the list referred to in subsection (1) if harmful or hazardous chemical or biological substances are added to or removed from the work site;
(b) submit a copy of each amendment to the Committee or representative; and
(c) keep a copy of the list at the work site and make the list readily available to the workers.
Section 311 Precautions for certain substances
311. (1) If a chemical or biological substance is listed or identified under subsection 310(1), an employer shall take reasonable steps to
(a) identify and record the hazards that could arise from the handling, use, storage, production or disposal of the substance at the work site;
(b) determine and apply precautions that need to be taken with respect to the substance to ensure the health and safety of workers; and
(c) clearly mark the container holding the substance with the name of the substance.
(2) An employer shall, in consultation with the Committee or representative, develop and implement a program to instruct workers about the hazards of the substances listed and identified under section 310 and subsection (1) and train workers in the precautions to be taken with respect to those substances.
Section 313 Substances listed in schedule R
313. If a worker is required or permitted to handle, use, store, produce or dispose of a chemical substance set out in Schedule R, an employer shall
(a) provide adequate engineering controls to prevent, to the extent that is reasonably possible, the release of the substance into the work site; and
(b) take other measures and provide personal protective equipment that meets the requirements of Part 7 to prevent, to the extent that is reasonably possible, exposure of workers to the substance.
Section 314 Substances listed in schedule O
314. (1) Subject to sections 313 and 315, if a chemical or biological substance set out in Schedule O is present at a work site, an employer shall, to the extent that is reasonably possible,
(a) provide adequate engineering controls to ensure that the contamination limit set out in Schedule O is not exceeded; and
(b) take steps to ensure that workers’ personal exposure does not exceed the contamination limits set out in Schedule O.
(2) An employer shall, in consultation with the Committee or representative, develop and implement a written procedure in accordance with subsection (3) if a chemical or biological substance set out in Schedule O is present at a work site in an airborne concentration that could be hazardous to workers who
(a) are regularly required or permitted to work more than eight hours in a day or 40 hours in a week; or
(b) could be exposed to a combination or association of substances listed in Schedule O that have similar toxicological effects when acting on the same organ or body system.
(3) A written procedure required by subsection (2) must identify
(a) the substances to which workers could be exposed;
(b) the conditions under which workers could be required or permitted to work, including the frequency, quantity and duration of exposure to the substances; and
(c) the steps that the employer will take to ensure, to an extent that is reasonably possible, that workers’ personal exposure does not exceed the equivalent of the contamination limit set out in Schedule O.
Section 315 Protection of certain workers
315. (1) This section applies if a chemical or biological substance is present at a work site in a form and to an extent that could be harmful to a worker who
(a) has become sensitized to the substance;
(b) is unusually responsive to the substance; or
(c) is pregnant.
(2) An employer shall, after being made aware of a worker’s condition of a type described in subsection (1),
(a) if reasonably possible, take steps to minimize the exposure of the worker to the substance; or
(b) on the worker’s request, assign the worker to less hazardous alternate work, if that work is available.
Section 316 Respiratory protective devices
316. If it is not reasonably possible to reduce a worker’s personal exposure to a chemical or biological substance to the contamination limit set out in Schedule O, an employer shall provide an approved respiratory protective device that meets the requirements of Part 7 and require the worker to use it.
Part 33 REPEAL AND COMMENCEMENT
Schedule F Notifiable Medical Conditions Resulting from Occupational Exposure
1. Acute, sub-acute or chronic disease of an organ resulting from exposure to lead, arsenic, beryllium, phosphorus, manganese, cadmium or mercury or their compounds or alloys
2. Neoplasia of the skin or mucous membrane resulting from exposure to tar, pitch, bitumen, mineral or cutting oils or arsenic or their compounds, products or residue
3. Neoplasia of the renal tract in a worker who works in rubber compounding, in dyestuff manufacture or mixing or in a laboratory
4. Pneumoconiosis resulting from exposure to silica or silicate, including asbestos, talc, mica or coal
5. Toxic jaundice resulting from exposure to tetrachloromethane or nitro- or amidoderivatives of benzene or other hepato-toxic or haemato-toxic substances
6. Neoplasia or any form of sickness resulting from internal or external exposure to ionizing radiation or electro-magnetic radiation
7. Poisoning by the anti-cholinesterase action of an organophosphorous or carbamate compound
8. Any form of decompression illness
9. Toxic anaemia resulting from exposure to trinitrotoluene, or any other haematogenic poison, including chronic poisoning by benzene
10. Mesothelioma of the pleura or peritoneum
11. Angiosarcoma of the liver
12. Malignant neoplasm of the nasal cavities resulting from exposure to chromium or its compounds, wood dust or formaldehyde
13. Malignant neoplasm of the scrotum resulting from exposure to petroleum products
14. Malignant neoplasm of lymphatic or haematopoietic tissue resulting from exposure to benzene
15. Cataract resulting from exposure to ionizing radiation, electro-magnetic radiation or nitrophenols
16. Male infertility resulting from exposure to glycol ethers, lead or pesticides
17. Spontaneous abortion resulting from exposure to ethylene oxide or antineoplastic drugs
18. Inflammatory and toxic neuropathy resulting from exposure to organic solvents
19. Asthma resulting from exposure to isocyanates, red cedar, amines, acid anhydride, epoxy resin systems, reactive dyes, metal fumes or salts, enzymes or bisulphites
20. Extrinsic allergic alveolitis resulting from exposure to mould or organic dust
Schedule O Contamination Limits
Table
| CAS* Number | Substance | 8 hour average contamination limit mg/m3 or ppm | 15 minute average contamination limit mg/m3 or ppm | Notation |
| 75-07-0 | Acetaldehyde | **C25 ppm | Schedule R | |
| 64-19-7 | Acetic acid | 10 ppm | 15 ppm | |
| 108-24-7 | Acetic anhydride | 5 ppm | 10 ppm | |
| 67-64-1 | Acetone | 500 ppm | 750 ppm | |
| 75-86-5 | Acetone cyanohydrin, as CN | **C5 mg/m³ | Skin | |
| 75-05-8 | Acetonitrile | 20 ppm | 30 ppm | Skin |
| 98-86-2 | Acetophenone | 10 ppm | 15 ppm | |
| 79-27-6 | Acetylene tetrabromide | 1 ppm | 3 ppm | |
| 50-78-2 | Acetylsalicylic acid | 5 mg/m³ | 10 mg/m³ | |
| 107-02-8 | Acrolein | **C0.1 ppm | Skin | |
| 79-06-1 | Acrylamide (inhalable fraction and vapour) | 0.03 mg/m³ | 0.09 mg/m³ | Schedule R, Skin |
| 79-10-7 | Acrylic acid | 2 ppm | 4 ppm | Skin |
| 107-13-1 | Acrylonitrile | 2 ppm | 4 ppm | Skin, Schedule R |
| 124-04-9 | Adipic acid | 5 mg/m³ | 10 mg/m³ | |
| 111-69-3 | Adiponitrile | 2 ppm | 4 ppm | Skin |
| 309-00-2 | Aldrin | 0.25 mg/m³ | 0.75 mg/m³ | Skin |
| Aliphatic hydrocarbon gases, Alkane [C1-C4] | 1000 ppm | 1250 ppm | ||
| 107-18-6 | Allyl alcohol | 0.5 ppm | 1.5 ppm | Skin |
| 107-05-1 | Allyl chloride | 1 ppm | 2 ppm | |
| 106-92-3 | Allyl glycidyl ether (AGE) | 1 ppm | 3 ppm | |
| 2179-59-1 | Allyl propyl disulphide | 0.5 ppm | 1.5 ppm | SEN |
| 7429-90-5 | Aluminum and compounds (as Al): | |||
| - | Metal dust | 10 mg/m³ | 20 mg/m³ | |
| - | Pyro powders | 5 mg/m³ | 10 mg/m³ | |
| - | Soluble salts | 2 mg/m³ | 4 mg/m³ | |
| - | Alkyls, not otherwise specified | 2 mg/m³ | 4 mg/m³ | |
| 1344-28-1 | Aluminum oxide | 10 mg/m³ | 20 mg/m³ | |
| 504-29-0 | 2-Aminopyridine | 0.5 ppm | 1.0 ppm | |
| 61-82-5 | Amitrole | 0.2 mg/m³ | 0.6 mg/m³ | Schedule R |
| 7664-41-7 | Ammonia | 25 ppm | 35 ppm | |
| 3734642 | Ammonium chloride fume | 10 mg/m³ | 20 mg/m³ | |
| 3825-26-1 | Ammonium perfluorooctanoate | 0.01 mg/m³ | 0.03 mg/m³ | Skin |
| 2145220 | Ammonium sulphamate (Ammate) | 10 mg/m³ | 20 mg/m³ | |
| 994-05-8 | tert-Amyl methyl ether (TAME) | 20 ppm | 30 ppm | |
| 62-53-3 | Aniline | 2 ppm | 4 ppm | Skin |
| 90-04-0 | o-Anisidine | 0.5 mg/m³ | 1.5 mg/m³ | Skin, Schedule R |
| 104-94-9 | p-Anisidine | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 7440-36-0 | Antimony and compounds, (as Sb) | 0.5 mg/m³ | 1.5 mg/m³ | |
| 86-88-4 | ANTU (alpha-Naphthyl thiourea) | 0.3 mg/m³ | 0.9 mg/m³ | |
| 7440-38-2 | Arsenic, and inorganic compounds, (as As) | 0.01 mg/m³ | 0.03 mg/m³ | Schedule R |
| 7784-42-1 | Arsine | 0.05 ppm | 0.15 ppm | |
| 8052-42-4 | Asphalt (bitumen) fume, as benzene soluble aerosol (inhalable fraction) | 0.5 mg/m³ | 1.5 mg/m³ | |
| 1912-24-9 | Atrazine | 5 mg/m³ | 10 mg/m³ | Schedule R |
| 86-50-0 | Azinphos-methyl (inhalable fraction and vapour) | 0.2 mg/m³ | 0.6 mg/m³ | Skin; SEN |
| 7440-39-3 | Barium and soluble compounds, (as Ba) | 0.5 mg/m³ | 1.5 mg/m³ | |
| 7727-43-7 | Barium sulphate | 10 mg/m³ | 20 mg/m³ | |
| 17804-35-2 | Benomyl | 10 mg/m³ | 20 mg/m³ | |
| 98-07-7 | Benzotrichloride | **C0.1 ppm | Skin, Schedule R | |
| 98-88-4 | Benzoyl chloride | **C0.5 ppm | Schedule R | |
| 94-36-0 | Benzoyl peroxide | 5 mg/m³ | 10 mg/m³ | |
| 140-11-4 | Benzyl acetate | 10 ppm | 20 ppm | |
| 100-44-7 | Benzyl chloride | 1 ppm | 2 ppm | Schedule R |
| 7440-41-7 | Beryllium and compounds, (as Be) | 0.002 mg/m³ | 0.01 mg/m³ | Schedule R |
| 92-52-4 | Biphenyl (diphenyl) | 0.2 ppm | 0.6 ppm | |
| 3033-62-3 | Bis (2-dimethylaminoethyl) ether (DMAE E) | 0.05 ppm | 0.15 ppm | Skin |
| 1304-82-1 | Bismuth telluride | |||
| - | Undoped | 10 mg/m³ | 20 mg/m³ | |
| - | Se-doped, as Bi2 Te 3 | 5 mg/m³ | 10 mg/m³ | |
| 1330-43-4; 1303- 96-4; 10043-35-3; 12179-04-3 | Borate compounds, inorganic (inhalable fraction) | 2 mg/m³ | 6 mg/m³ | |
| 1303-86-2 | Boron oxide | 10 mg/m³ | 20 mg/m³ | |
| 10294-33-4 | Boron tribromide | **C1 ppm | ||
| 2095578 | Boron trifluoride | **C1 ppm | ||
| 314-40-9 | Bromacil | 10 mg/m³ | 20 mg/m³ | |
| 7726-95-6 | Bromine | 0.1 ppm | 0.2 ppm | |
| 7789-30-2 | Bromine pentafluoride | 0.1 ppm | 0.3 ppm | |
| 74-97-5 | Bromochloromethane (Chlorobro momethane) | 200 ppm | 250 ppm | |
| 75-25-2 | Bromoform | 0.5 ppm | 1.5 ppm | Skin |
| 106-94-5 | 1-Bromopropane | 10 ppm | 20 ppm | |
| 106-99-0 | 1,3-Butadiene | 2 ppm | 4 ppm | Schedule R |
| 106-97-8; 75-28-5 | Butane, All isomers | See Aliphatic hydrocarbon gases [C1-C4] | ||
| 111-76-2 | 2-Butoxyethanol (Butyl Cellosolve or EGBE) | 20 ppm | 30 ppm | |
| 112-07-2 | 2-Butoxyethyl acetate (EGBEA) | 20 ppm | 30 ppm | |
| 123-86-4 | n-Butyl acetate | 150 ppm | 200 ppm | |
| 105-46-4 | sec-Butyl acetate | 200 ppm | 250 ppm | |
| 540-88-5 | tert-Butyl acetate | 200 ppm | 250 ppm | |
| 141-32-2 | n-Butyl acrylate | 2 ppm | 4 ppm | SEN |
| 71-36-3 | n-Butyl alcohol (n-butanol) | 20 ppm | 30 ppm | |
| 78-92-2 | sec-Butyl alcohol (sec-butanol) | 100 ppm | 125 ppm | |
| 75-65-0 | tert-Butyl alcohol (tert-butanol) | 100 ppm | 125 ppm | |
| 109-73-9 | n-Butylamine | **C5 ppm | Skin | |
| 1189-85-1 | tert-Butyl chromate, (as Cr03) | **C0.1 mg/m³ | Skin | |
| 192336 | n-Butyl glycidyl ether (BGE) | 3 ppm | 6 ppm | Skin, SEN |
| 138-22-7 | n-Butyl lactate | 5 ppm | 10 ppm | |
| 109-79-5 | n-Butyl mercaptan | 0.5 ppm | 1.5 ppm | |
| 89-72-5 | o-sec-Butylphenol | 5 ppm | 7 ppm | Skin |
| 98-51-1 | p-tert-Butyltoluene | 1 ppm | 2 ppm | |
| 7440-43-9 | Cadmium, and compounds, (as Cd): | Schedule R | ||
| - | (total fraction) | 0.01 mg/m³ | 0.03 mg/m³ | |
| - | (respirable fraction) | 0.002 mg/m³ | 0.006 mg/m³ | |
| 1317-65-3 | Calcium carbonate | 10 mg/m³ | 20 mg/m³ | |
| 13765-19-0 | Calcium chromate, (as Cr) | 0.001 mg/m³ | 0.003 mg/m³ | |
| 156-62-7 | Calcium cyanamide | 0.5 mg/m³ | 1.5 mg/m³ | |
| 1305-62-0 | Calcium hydroxide | 5 mg/m³ | 10 mg/m³ | |
| 1305-78-8 | Calcium oxide | 2 mg/m³ | 4 mg/m³ | |
| 1344-95-2 | Calcium silicate, synthetic nonfibrous | 10 mg/m³ | 20 mg/m³ | |
| 76-22-2 | Camphor, synthetic | 2 ppm | 3 ppm | |
| 105-60-2 | Caprolactam (inhalable fraction and vapour) | 5 mg/m³ | 10 mg/m³ | |
| 191905 | Captafol | 0.1 mg/m³ | 0.3 mg/m³ | Skin, Schedule R |
| 133-06-2 | Captan (inhalable fraction) | 5 mg/m³ | 10 mg/m³ | SEN |
| 63-25-2 | Carbaryl | 5 mg/m³ | 10 mg/m³ | |
| 1563-66-2 | Carbofuran (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 1333-86-4 | Carbon black | 3.5 mg/m³ | 7 mg/m³ | |
| 124-38-9 | Carbon dioxide | 5000 ppm | 30,000 ppm | |
| 75-15-0 | Carbon disulphide | 10 ppm | 15 ppm | Skin |
| 630-08-0 | Carbon monoxide | 25 ppm | 190 ppm | |
| 558-13-4 | Carbon tetrabromide | 0.1 ppm | 0.3 ppm | |
| 75-44-5 | Carbonyl chloride (Phosgene) | 0.1 ppm | 0.3 ppm | |
| 353-50-4 | Carbonyl fluoride | 2 ppm | 5 ppm | |
| 120-80-9 | Catechol (Pyrocatechol) | 5 ppm | 7.8 ppm | Skin |
| 9004-34-6 | Cellulose (paper fibre) | 10 mg/m³ | 20 mg/m³ | |
| 21351-79-1 | Cesium hydroxide | 2 mg/m³ | 4 mg/m³ | |
| 57-74-9 | Chlordane | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 8001-35-2 | Chlorinated camphene | 0.5 mg/m³ | 1 mg/m³ | Skin, Schedule R |
| 31242-93-0 | o-Chlorinated diphenyl oxide | 0.5 mg/m³ | 1.5 mg/m³ | |
| 7782-50-5 | Chlorine | 0.5 ppm | 1 ppm | |
| 2976453 | Chlorine dioxide | 0.1 ppm | 0.3 ppm | |
| 7790-91-2 | Chlorine trifluoride | **C 0.1 ppm | ||
| 107-20-0 | Chloroacetaldehyde | **C1 ppm | ||
| 78-95-5 | Chloroacetone | **C1 ppm | Skin | |
| 532-27-4 | alpha-Chloroacetophenone (Phenacyl chloride) | 0.05 ppm | 0.15 ppm | |
| 79-04-9 | Chloroacetyl chloride | 0.05 ppm | 0.15 ppm | Skin |
| 108-90-7 | Chlorobenzene (Monochlorobenz ene) | 10 ppm | 15 ppm | |
| 2698-41-1 | o-Chlorobenzylidene malononitrile | **C0.05 ppm | Skin | |
| 126-99-8 | 2-Chloro-1,3-butadiene (beta- Chloroprene) | 10 ppm | 15 ppm | Skin |
| 75-45-6 | Chlorodifluoromethane | 1000 ppm | 1250 ppm | |
| 53469-21-9 | Chlorodiphenyl (42% chlorine) | 1 mg/m³ | 3 mg/m³ | Skin |
| 11097-69-1 | Chlorodiphenyl (54% chlorine) | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 107-07-3 | 2-Chloroethanol (Ethylene chlorohydrin) | **C1.0 ppm | Skin | |
| 600-25-9 | 1-Chloro-1-nitropropane | 2 ppm | 4 ppm | |
| 76-15-3 | Chloropentafluoroethane | 1000 ppm | 1250 ppm | |
| 76-06-2 | Chloropicrin | 0.1 ppm | 0.3 ppm | |
| 127-00-4; 78-89-7 | 1-Chloro-2-propanol and 2Chloro- 1-propanol | 1 ppm | 3 ppm | Skin |
| 598-78-7 | 2-Chloropropionic acid | 0.1 ppm | 0.3 ppm | Skin |
| 2039-87-4 | o-Chlorostyrene | 50 ppm | 75 ppm | |
| 95-49-8 | o-Chlorotoluene | 50 ppm | 65 ppm | |
| 2921-88-2 | Chlorpyrifos, (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 7440-47-3 | Chromium metal and inorganic compounds, (as Cr): | |||
| Metal and Cr (III) compounds | 0.5 mg/m³ | 1.5 mg/m³ | ||
| - | Water soluble Cr (VI) compounds | 0.05 mg/m³ | 0.15 mg/m³ | Schedule R |
| - | Insoluble Cr (VI) compounds | 0.01 mg/m³ | 0.03 mg/m³ | Schedule R |
| 14977-61-8 | Chromyl chloride | 0.025 ppm | 0.07 ppm | |
| 2971-90-6 | Clopidol | 10 mg/m³ | 20 mg/m³ | |
| - | Coal dust: | |||
| - | Anthracite (respirable fraction) | 0.4 mg/m³ | 1.2 mg/m³ | |
| - | Bituminous (respirable fraction) | 0.9 mg/m³ | 2.7 mg/m³ | |
| 65996-93-2 | Coal tar pitch volatiles, as benzene soluble aerosol (See Particulate polycyclic aromatic hydrocarbons) | 0.2 mg/m³ | 0.6 mg/m³ | Schedule R |
| 7440-48-4 | Cobalt and inorganic compounds, (as Co) | 0.02 mg/m³ | 0.06 mg/m³ | Schedule R |
| 10210-68-1 | Cobalt carbonyl, (as Co) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 5457516 | Cobalt hydrocarbonyl, (as Co) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 7440-50-8 | Copper, (as Cu): | |||
| - | Fume | 0.2 mg/m³ | 0.6 mg/m³ | |
| - | dusts and mists | 1 mg/m³ | 3 mg/m³ | |
| - | Cotton dust, raw | 0.2 mg/m³ | 0.6 mg/m³ | |
| 1319-77-3 | Cresol, all isomers | 5 ppm | 10 ppm | Skin |
| 4170-30-3 | Crotonaldehyde | **C 0.3 ppm | Skin | |
| 299-86-5 | Crufomate | 5 mg/m³ | 10 mg/m³ | |
| 98-82-8 | Cumene | 50 ppm | 74 ppm | |
| 420-04-2 | Cyanamide | 2 mg/m³ | 4 mg/m³ | |
| 460-19-5 | Cyanogen | 10 ppm | 15 ppm | |
| 506-77-4 | Cyanogen chloride | **C0.3 ppm | ||
| 110-82-7 | Cyclohexane | 100 ppm | 150 ppm | |
| 108-93-0 | Cyclohexanol | 50 ppm | 62 ppm | Skin |
| 108-94-1 | Cyclohexanone | 20 ppm | 50 ppm | Skin |
| 110-83-8 | Cyclohexene | 300 ppm | 375 ppm | |
| 108-91-8 | Cyclohexylamine | 10 ppm | 15 ppm | |
| 121-82-4 | Cyclonite (RDX) | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 542-92-7 | Cyclopentadiene | 75 ppm | 94 ppm | |
| 287-92-3 | Cyclopentane | 600 ppm | 900 ppm | |
| 13121-70-5 | Cyhexatin | 5 mg/m³ | 10 mg/m³ | |
| 94-75-7 | 2,4-D (2,4-Dichlorophenoxy- acetic acid) | 10 mg/m³ | 20 mg/m³ | |
| 50-29-3 | DDT (Dichlorodiphenyltrichloro- ethane) | 1 mg/m³ | 3 mg/m³ | Schedule R |
| 17702-41-9 | Decaborane | 0.05 ppm | 0.15 ppm | Skin |
| 8065-48-3 | Demeton (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 919-86-8 | Demeton-S-methyl, (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin, SEN |
| 123-42-2 | Diacetone alcohol (4-hydroxy- 4methyl-2- | 50 ppm | 60 ppm | |
| 333-41-5 | Diazinon, (inhalable fraction and vapour) | 0.01 mg/m³ | 0.03 mg/m³ | Skin |
| 334-88-3 | Diazomethane | 0.2 ppm | 0.6 ppm | Schedule R |
| 19287-45-7 | Diborane | 0.1 ppm | 0.3 ppm | |
| 102-81-8 | 2-N-Dibutylaminoethanol | 0.5 ppm | 1 ppm | Skin |
| 2528-36-1 | Dibutyl phenyl phosphate | 0.3 ppm | 0.6 ppm | Skin |
| 107-66-4 | Dibutyl phosphate | 1 ppm | 2 ppm | |
| 84-74-2 | Dibutyl phthalate | 5 mg/m³ | 10 mg/m³ | |
| 79-43-6 | Dichloroacetic acid | 0.5 ppm | 1.5 ppm | Skin, Schedule R |
| 7572-29-4 | Dichloracetylene | **C0.1 ppm | ||
| 95-50-1 | o-Dichlorobenzene | 25 ppm | 50 ppm | |
| 106-46-7 | p-Dichlorobenzene | 10 ppm | 15 ppm | Schedule R |
| 764-41-0 | 1,4-Dichloro-2-butene | 0.005 ppm | 0.015 ppm | Skin, Schedule R |
| 75-71-8 | Dichlorodifluoromethane | 1000 ppm | 1250 ppm | |
| 118-52-5 | 1,3-Dichloro-5, 5-dimethyl hydantoin | 0.2 mg/m³ | 0.4 mg/m³ | |
| 75-34-3 | 1,1-Dichloroethane | 100 ppm | 125 ppm | |
| 540-59-0; 156-59-2; 156-60-5 | 1,2-Dichloroethylene, all isomers | 200 ppm | 250 ppm | |
| 111-44-4 | Dichloroethyl ether | 5 ppm | 10 ppm | Skin |
| 75-43-4 | Dichlorofluoromethane | 10 ppm | 15 ppm | |
| 75-09-2 | Dichloromethane | 50 ppm | 75 ppm | Schedule R |
| 594-72-9 | 1,1-Dichloro-1-nitroethane | 2 ppm | 4 ppm | |
| 542-75-6 | 1,3-Dichloropropene | 1 ppm | 2 ppm | Skin, Schedule R |
| 75-99-0 | 2,2-Dichloropropionic acid, (inhalable fraction) | 5 mg/m³ | 10 mg/m³ | |
| 76-14-2 | Dichlorotetrafluoroethane | 1000 ppm | 1250 ppm | |
| 62-73-7 | Dichlorvos (DDVP), (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | Skin, SEN, Schedule R |
| 141-66-2 | Dicrotophos, (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 77-73-6 | Dicyclopentadiene | 5 ppm | 8 ppm | |
| 102-54-5 | Dicyclopentadienyl iron | 10 mg/m³ | 20 mg/m³ | |
| 60-57-1 | Dieldrin | 0.25 mg/m³ | 0.75 mg/m³ | Skin |
| 683334-30-5; 68476-30-2; 68476-31-3; 68476-34-6; 77650-28-3 | Diesel fuel as total hydrocarbons, (vapour) | 100 mg/m³ | 150 mg/m³ | Skin |
| 111-42-2 | Diethanolamine | 2 mg/m³ | 4 mg/m³ | Skin |
| 109-89-7 | Diethylamine | 5 ppm | 15 ppm | Skin |
| 100-37-8 | 2-Diethylaminoethanol | 2 ppm | 4 ppm | Skin |
| 111-40-0 | Diethylene triamine | 1 ppm | 2 ppm | Skin |
| 96-22-0 | Diethyl ketone | 200 ppm | 300 ppm | |
| 84-66-2 | Diethyl phthalate | 5 mg/m³ | 10 mg/m³ | |
| 75-61-6 | Difluorodibromomethane | 100 ppm | 125 ppm | |
| 2238-7-5 | Diglycidyl ether (DGE) | 0.1 ppm | 0.3 ppm | |
| 108-83-8 | Diisobutyl ketone | 25 ppm | 30 ppm | |
| 108-18-9 | Diisopropylamine | 5 ppm | 7 ppm | Skin |
| 127-19-5 | N,N-Dimethylacetamide | 10 ppm | 15 ppm | Skin |
| 124-40-3 | Dimethylamine | 5 ppm | 15 ppm | |
| 121-69-7 | Dimethylaniline (N,N- Dimethylaniline) | 5 ppm | 10 ppm | Skin |
| 14857-34-2 | Dimethylethoxysilane | 0.5 ppm | 1.5 ppm | |
| 68-12-2 | Dimethylformamide | 10 ppm | 15 ppm | Skin, Schedule R |
| 57-14-7 | 1,1-Dimethylhydrazine | 0.01 ppm | 0.03 ppm | Skin, Schedule R |
| 131-11-3 | Dimethylphthalate | 5 mg/m³ | 10 mg/m³ | |
| 77-78-1 | Dimethyl sulphate | 0.1 ppm | 0.3 ppm | Skin, Schedule R |
| 75-18-3 | Dimethyl sulphide | 10 ppm | 20 ppm | |
| 148-1-6 | Dinitolmide | 5 mg/m³ | 10 mg/m³ | |
| 528-29-0; 99-65-0; 100-25-4; 25154-54-5 | Dinitrobenzene (all isomers) | 0.15 ppm | 0.30 ppm | Skin |
| 534-52-1 | Dinitro-o-cresol | 0.2 mg/m³ | 0.6 mg/m³ | Skin |
| 25321-14-6 | Dinitrotoluene | 0.2 mg/m³ | 0.6 mg/m³ | Skin, Schedule R |
| 123-91-1 | 1,4-Dioxane | 20 ppm | 30 ppm | Skin, Schedule R |
| 78-34-2 | Dioxathion (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 646-06-0 | 1,3-Dioxolane | 20 ppm | 30 ppm | |
| 122-39-4 | Diphenylamine | 10 mg/m³ | 20 mg/m³ | |
| 34590-94-8 | Dipropylene glycol methyl ether (DPGME) | 100 ppm | 150 ppm | Skin |
| 123-19-3 | Dipropyl ketone | 50 ppm | 60 ppm | |
| 2764-72-9; 85-00-7; 6385-62-2 | Diquat: (inhalable fraction) (respirable fraction) | 0.5 mg/m³ 0.1 mg/m³ | 1.5 mg/m³ 0.3 mg/m³ | Skin |
| 117-81-7 | Di-sec, octyl phthalate (Di- 2ethylhexyl phthalate or DEHP) | 5 mg/m³ | 10 mg/m³ | Schedule R |
| 97-77-8 | Disulphiram | 2 mg/m³ | 4 mg/m³ | |
| 298-04-4 | Disulphoton, (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 128-37-0 | 2,6-Di-tert-butyl-p-cresol (butylated hydroxytoluene or BHT) (inhalable fraction and vapour) | 2 mg/m³ | 4 mg/m³ | |
| 330-54-1 | Diuron | 10 mg/m³ | 20 mg/m³ | |
| 1321-74-0 | Divinyl benzene | 10 ppm | 15 ppm | |
| 112-55-0 | Dodecyl mercaptan | 0.1 ppm | 0.3 ppm | SEN |
| 1302-74-5 | Emery | 10 mg/m³ | 20 mg/m³ | |
| 115-29-7 | Endosulphan | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 72-20-8 | Endrin | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 13838-16-9 | Enflurane | 75 ppm | 100 ppm | |
| 106-89-8 | Epichlorohydrin | 0.5 ppm | 1.5 ppm | Skin, Schedule R |
| 2104-64-5 | EPN (inhalable fraction) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 74-84-0 | Ethane | See Aliphatic hydrocarbon gases [C1-C4] | ||
| 64-17-5 | Ethanol | 1000 ppm | 1250 ppm | |
| 141-43-5 | Ethanolamine | 3 ppm | 6 ppm | |
| 563-12-2 | Ethion, (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 110-80-5 | 2-Ethoxyethanol (Glycol monoethyl ether) | 5 ppm | 7 ppm | Skin |
| 111-15-9 | 2-Ethyoxyethyl acetate (Cellosolve acetate) | 5 ppm | 8 ppm | Skin |
| 141-78-6 | Ethyl acetate | 400 ppm | 500 ppm | |
| 140-88-5 | Ethyl acrylate | 5 ppm | 15 ppm | Schedule R |
| 75-04-7 | Ethylamine | 5 ppm | 15 ppm | Skin |
| 541-85-5 | Ethyl amyl ketone (5-Methyl- 3heptanone) | 25 ppm | 30 ppm | |
| 100-41-4 | Ethyl benzene | 100 ppm | 125 ppm | Schedule R |
| 74-96-4 | Ethyl bromide | 5 ppm | 7 ppm | Skin |
| 637-92-3 | Ethyl tert-butyl ether | 5 ppm | 10 ppm | |
| 106-35-4 | Ethyl butyl ketone (3-Heptanone) | 50 ppm | 75 ppm | |
| 75-00-3 | Ethyl chloride | 100 ppm | 125 ppm | Skin |
| 7085-85-0 | Ethyl cyanoacrylate | 0.2 ppm | 0.6 ppm | |
| 74-85-1 | Ethylene | 200 ppm | 250 ppm | |
| 107-15-3 | Ethylenediamine | 10 ppm | 15 ppm | Skin |
| 107-06-2 | Ethylene dichloride | 10 ppm | 20 ppm | |
| 107-21-1 | Ethylene glycol, (as an aerosol) | **C 100 mg/m³ | ||
| 628-96-6 | Ethylene glycol dinitrate (EGDN) | 0.05 ppm | 0.15 ppm | Skin |
| 75-21-8 | Ethylene oxide | 1 ppm | 2 ppm | Schedule R |
| 151-56-4 | Ethylenimine | 0.5 ppm | 1.5 ppm | Skin, Schedule R |
| 60-29-7 | Ethyl ether | 400 ppm | 500 ppm | |
| 109-94-4 | Ethyl formate | 100 ppm | 150 ppm | |
| 149-57-5 | 2-Ethylhexanoic acid, (inhalable fraction and vapour) | 5 mg/m³ | 10 mg/m³ | |
| 16219-75-3 | Ethylidene norbornene | **C5 ppm | ||
| 75-08-1 | Ethyl mercaptan | 0.5 ppm | 1.5 ppm | |
| 100-74-3 | N-Ethylmorpholine | 5 ppm | 8 ppm | Skin |
| 78-10-4 | Ethyl silicate | 10 ppm | 15 ppm | |
| 22224-92-6 | Fenamiphos | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 115-90-2 | Fensulphothion (inhalable fraction and vapour) | 0.01 mg/m³ | 0.03 mg/m³ | Skin |
| 55-38-9 | Fenthion | 0.2 mg/m³ | 0.6 mg/m³ | Skin |
| 14484-64-1 | Ferbam | 10 mg/m³ | 20 mg/m³ | |
| 12604-58-9 | Ferrovanadium dust | 1 mg/m³ | 3 mg/m³ | |
| - | Flour dust | 3 mg/m³ | 6 mg/m³ | SEN |
| - | Fluoride, (as F) | 2.5 mg/m³ | 5 mg/m³ | |
| 7782-41-4 | Fluorine | 1 ppm | 2 ppm | |
| 944-22-9 | Fonofos | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 50-00-0 | Formaldehyde | **C0.3 ppm | SEN, Schedule R | |
| 75-12-7 | Formamide | 10 ppm | 15 ppm | Skin |
| 64-18-6 | Formic acid | 5 ppm | 10 ppm | |
| 98-01-1 | Furfural | 2 ppm | 4 ppm | Skin |
| 98-00-0 | Furfuryl alcohol | 10 ppm | 15 ppm | Skin |
| 36547 | Gallium arsenide (respirable fraction) | 0.0003 mg/m³ | 0.0009 mg/m³ | |
| 86290-81-5 | Gasoline | 300 ppm | 500 ppm | |
| 7782-65-2 | Germanium tetrahydride | 0.2 ppm | 0.6 ppm | |
| 111-30-8 | Glutaraldehyde, activated and inactivated | **C0.05 ppm | SEN | |
| 56-81-5 | Glycerin mist | 10 mg/m³ | 20 mg/m³ | |
| 556-52-5 | Glycidol | 2 ppm | 4 ppm | |
| 107-22-2 | Glyoxal, (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | SEN |
| - | Grain dust (oat, wheat, barley) | 4 mg/m³ | 8 mg/m³ | |
| 7782-42-5 | Graphite, natural-all forms except graphite fibres (respirable fraction) | 2 mg/m³ | 4 mg/m³ | |
| 7778-18-9 | Gypsum (Calcium sulphate) | 10 mg/m³ | 20 mg/m³ | |
| 7440-58-6 | Hafnium and compounds, (as Hf) | 0.5 mg/m³ | 1.5 mg/m³ | |
| 151-67-7 | Halothane | 50 ppm | 60 ppm | |
| 76-44-8; 1024-57-3 | Heptachlor and Heptchlor epoxide | 0.05 mg/m³ | 0.15 mg/m³ | Skin, Schedule R |
| 142-82-5 | Heptane (n-Heptane) | 400 ppm | 500 ppm | |
| 118-74-1 | Hexachlorobenzene | 0.002 mg/m³ | 0.006 mg/m³ | Skin, Schedule R |
| 87-68-3 | Hexachlorobutadiene | 0.02 ppm | 0.06 ppm | Skin, Schedule R |
| 77-47-4 | Hexachlorocyclopentadiene | 0.01 ppm | 0.03 ppm | |
| 67-72-1 | Hexachloroethane | 1 ppm | 2 ppm | Skin, Schedule R |
| 1335-87-1 | Hexachloronaphthalene | 0.2 mg/m³ | 0.6 mg/m³ | Skin |
| 684-16-2 | Hexafluoroacetone | 0.1 ppm | 0.3 ppm | Skin |
| 85-42-7; 13149-00-3; 14166-21-3 | Hexahydrophthalic anhydride, (inhalable fraction and vapour), all isomers | **C0.005 mg/m³ | SEN | |
| 822-06-0 | Hexamethylene diisocyanate | 0.005 ppm | 0.015 ppm | |
| 110-54-3 | Hexane (n-Hexane) | 50 ppm | 62.5 ppm | Skin |
| - | Hexane (other isomers) | 500 ppm | 1000 ppm | |
| 124-09-4 | Hexanediamine | 0.5 ppm | 1.0 ppm | |
| 592-41-6 | 1-Hexene | 50 ppm | 75 ppm | |
| 108-84-9 | sec-Hexyl acetate | 50 ppm | 60 ppm | |
| 107-41-5 | Hexylene glycol | **C25 ppm | ||
| 302-01-2 | Hydrazine | 0.01 ppm | 0.03 ppm | Skin, Schedule R |
| 61788-32-7 | Hydrogenated terphenyls (nonirradiated) | 0.5 ppm | 1.5 ppm | |
| 10035-10-6 | Hydrogen bromide | **C2 ppm | ||
| 2099048 | Hydrogen chloride | **C2 ppm | ||
| - | Hydrogen cyanide and cyanide salts, (as CN): | |||
| 74-90-8 | Hydrogen cyanide | **C4.7 ppm | Skin | |
| 592-01-8; 151-50-8; 143-33-9 | Cyanide salts | **C 5 mg/m³ | Skin | |
| 7664-39-3 | Hydrogen fluoride, (as F) | 0.5 ppm | **C 2 ppm | |
| 7722-84-1 | Hydrogen peroxide | 1 ppm | 2 ppm | |
| 2148906 | Hydrogen selenide, (as Se) | 0.05 ppm | 0.15 ppm | |
| 2148875 | Hydrogen sulphide | 10 ppm | 15 ppm | |
| 123-31-9 | Hydroquinone | 2 mg/m³ | 4 mg/m³ | |
| 999-61-1 | 2-Hydroxypropyl acrylate | 0.5 ppm | 1 ppm | Skin, SEN |
| 95-13-6 | Indene | 10 ppm | 15 ppm | |
| 7440-74-6 | Indium and Compounds, (as In) | 0.1 mg/m³ | 0.3 mg/m³ | Schedule R (Indium pho- sphide) |
| 7553-56-2 | Iodine | **C0.1 ppm | ||
| 75-47-8 | Iodoform | 0.6 ppm | 1.2 ppm | |
| 1309-37-1 | Iron oxide fume, (dust and fume) (Fe2O3, as Fe) | 5 mg/m³ | 10 mg/m³ | |
| 13463-40-6 | Iron pentacarbonyl, (as Fe) | 0.1 ppm | 0.2 ppm | |
| Iron salts, soluble, (as Fe) | 1 mg/m³ | 3 mg/m³ | ||
| 123-51-3 | Isoamyl alcohol | 100 ppm | 125 ppm | |
| 110-19-0 | Isobutyl acetate | 150 ppm | 188 ppm | |
| 78-83-1 | Isobutyl alcohol | 50 ppm | 60 ppm | |
| 542-56-3 | Isobutyl nitrite, (inhalable fraction and vapour) | **C1 ppm | ||
| 26952-21-6 | Isooctyl alcohol | 50 ppm | 60 ppm | Skin |
| 78-59-1 | Isophorone | **C5 ppm | ||
| 4098-71-9 | Isophorone diisocyanate | 0.005 ppm | 0.015 ppm | |
| 109-59-1 | 2-Isopropoxyethanol | 25 ppm | 38 ppm | Skin |
| 108-21-4 | Isopropyl acetate | 100 ppm | 200 ppm | |
| 67-63-0 | Isopropyl alcohol | 200 ppm | 400 ppm | |
| 75-31-0 | Isopropylamine | 5 ppm | 10 ppm | |
| 768-52-5 | N-Isopropylaniline | 2 ppm | 4 ppm | Skin |
| 108-20-3 | Isopropyl ether | 250 ppm | 310 ppm | |
| 4016-14-2 | Isopropyl glycidyl ether (IGE) | 50 ppm | 75 ppm | |
| 1332-58-7 | Kaolin (respirable fraction) | 2 mg/m³ | 4 mg/m³ | |
| 8008-20-6; 64742-81-0 | Kerosene /Jet fuels, as total hydrocarbon vapour | 200 mg/m³ | 250 mg/m³ | Skin |
| 463-51-4 | Ketene | 0.5 ppm | 1.5 ppm | |
| 7439-92-1 | Lead and inorganic compounds, (as Pb) | 0.05 mg/m³ | 0.15 mg/m³ | Schedule R |
| 3687-31-8 | Lead arsenate, (as Pb3(AsO4)2) | 0.15 mg/m³ | 0.45 mg/m³ | |
| 7758-97-6 | Lead chromate, (as Pb) | 0.05 mg/m³ | 0.15 mg/m³ | Schedule R |
| 7758-97-6 | Lead chromate, (as Cr) | 0.012 mg/m³ | 0.036 mg/m³ | Schedule R |
| 1317-65-3; 471-34-1 | Limestone (calcium carbonate) | 10 mg/m³ | 20 mg/m³ | |
| 58-89-9 | Lindane | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 7580-67-8 | Lithium hydride | 0.025 mg/m³ | 0.075 mg/m³ | |
| 68476-85-7 | L.P.G. (liquified petroleum gas) | See Aliphatic hydrocarbon gases [C1-C4] | ||
| 546-93-0 | Magnesite | 10 mg/m³ | 20 mg/m³ | |
| 1309-48-4 | Magnesium oxide (inhalable fraction) | 10 mg/m³ | 20 mg/m³ | |
| 121-75-5 | Malathion, (inhalable fraction and vapour) | 1 mg/m³ | 3 mg/m³ | Skin |
| 108-31-6 | Maleic anhydride | 0.1 ppm | 0.3 ppm | SEN |
| 7439-96-5 | Manganese and inorganic compounds, (as Mn) | 0.2 mg/m³ | 0.6 mg/m³ | |
| 12079-65-1 | Manganese cyclopentadienyl tricarbonyl, (as Mn) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 7439-97-6 | Mercury, (as Hg): | |||
| - | Alkyl compounds | 0.01 mg/m³ | 0.03 mg/m³ | Skin |
| - | Aryl compounds | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| - | Inorganic forms, including metallic mercury | 0.025 mg/m³ | 0.075 mg/m³ | Skin |
| 141-79-7 | Mesityl oxide | 15 ppm | 25 ppm | |
| 79-41-4 | Methacrylic acid | 20 ppm | 30 ppm | |
| 74-82-8 | Methane | See Aliphatic hydrocarbon gases [C1-C4] | ||
| 16752-77-5 | Methomyl | 2.5 mg/m³ | 5 mg/m³ | |
| 72-43-5 | Methoxychlor | 10 mg/m³ | 20 mg/m³ | |
| 109-86-4 | 2-Methoxyethanol (Methyl cellosolv e-EGME) | 5 ppm | 8 ppm | Skin |
| 110-49-6 | 2-Methoxyethyl acetate (Methyl cellosolve acetate-EGMEA) | 5 ppm | 8 ppm | Skin |
| 150-76-5 | 4-Methoxyphenol | 5 mg/m³ | 10 mg/m³ | |
| 79-20-9 | Methyl acetate | 200 ppm | 250 ppm | |
| 74-99-7 | Methyl acetylene | 1000 ppm | 1250 ppm | |
| 59355-75-8 | Methyl acetylene-propadiene mixture (MAPP) | 1000 ppm | 1250 ppm | |
| 96-33-3 | Methyl acrylate | 2 ppm | 4 ppm | Skin, SEN |
| 126-98-7 | Methylacrylonitrile | 1 ppm | 2 ppm | Skin |
| 109-87-5 | Methylal (dimethoxy methane) | 1000 ppm | 1250 ppm | |
| 67-56-1 | Methyl alcohol (methanol) | 200 ppm | 250 ppm | Skin |
| 74-89-5 | Methylamine | 5 ppm | 15 ppm | |
| 110-43-0 | Methyl n-amyl ketone (2- Heptanone) | 50 ppm | 60 ppm | |
| 100-61-8 | N-Methylaniline | 0.5 ppm | 1 ppm | Skin |
| 74-83-9 | Methyl bromide | 1 ppm | 3 ppm | Skin |
| 596899 | Methyl tert-butyl ether (MTBE) | 50 ppm | 75 ppm | |
| 591-78-6 | Methyl n-butyl ketone | 5 ppm | 10 ppm | Skin |
| 74-87-3 | Methyl chloride | 50 ppm | 100 ppm | Skin |
| 137-05-3 | Methyl 2-cyanoacrylate | 0.2 ppm | 0.6 ppm | |
| 108-87-2 | Methylcyclohexane | 400 ppm | 500 ppm | |
| 25639-42-3 | Methylcyclohexanol | 50 ppm | 60 ppm | |
| 583-60-8 | o-Methylcyclohexanone | 50 ppm | 75 ppm | Skin |
| 3728761 | 2-Methylcyclopentadienyl manganese tricarbonyl, (as Mn) | 0.2 mg/m³ | 0.6 mg/m³ | Skin |
| 2236015 | Methyl demeton | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 101-68-8 | Methylene bisphenyl isocyanate (MDI) | 0.005 ppm | 0.015 ppm | |
| 101-14-4 | 4,4'-Methylene bis (2- chloroaniline) (MBOCA, MOCA) | 0.01 ppm | 0.03 ppm | Skin, Schedule R |
| 37010 | Methylene bis (4-cyclohexylisocyanate) | 0.005 ppm | 0.015 ppm | |
| 75-09-2 | Methylene choride (dichloromethane) | 50 ppm | 63 ppm | |
| 101-77-9 | 4,4'-Methylene dianiline | 0.1 ppm | 0.3 ppm | Skin, Schedule R |
| 78-93-3 | Methyl ethyl ketone (MEK) | 200 ppm | 300 ppm | |
| 1338-23-4 | Methyl ethyl ketone peroxide | **C0.2 ppm | ||
| 107-31-3 | Methyl formate | 100 ppm | 150 ppm | |
| 60-34-4 | Methyl hydrazine | 0.01 ppm | 0.03 ppm | Skin, Schedule R |
| 74-88-4 | Methyl iodide | 2 ppm | 4 ppm | Skin, Schedule R |
| 110-12-3 | Methyl isoamyl ketone | 50 ppm | 60 ppm | |
| 108-11-2 | Methyl isobutyl carbinol | 25 ppm | 40 ppm | Skin |
| 108-10-1 | Methyl isobutyl ketone | 50 ppm | 75 ppm | |
| 624-83-9 | Methyl isocyanate | 0.02 ppm | 0.06 ppm | Skin |
| 563-80-4 | Methyl isopropyl ketone | 200 ppm | 250 ppm | |
| 74-93-1 | Methyl mercaptan | 0.5 ppm | 1.5 ppm | |
| 80-62-6 | Methyl methacrylate | 50 ppm | 100 ppm | SEN |
| 298-00-0 | Methyl parathion | 0.2 mg/m³ | 0.6 mg/m³ | Skin |
| 107-87-9 | Methyl propyl ketone | 200 ppm | 250 ppm | |
| 681-84-5 | Methyl silicate | 1 ppm | 2 ppm | |
| 98-83-9 | alpha-Methyl styrene | 50 ppm | 100 ppm | |
| 78-94-4 | Methyl vinyl ketone | **C0.2 ppm | Skin, SEN | |
| 21087-64-9 | Metribuzin | 5 mg/m³ | 10 mg/m³ | |
| 7786-34-7 | Mevinphos (inhalable fraction and vapour) | 0.01mg/m³ | 0.03 mg/m³ | Skin |
| 12001-26-2 | Mica (respirable fraction) | 3 mg/m³ | 6 mg/m³ | |
| 7439-98-7 | Molybdenum, (as Mo): | |||
| - | Soluble compounds, (respirable fraction) | 0.5 mg/m³ | 1.5 mg/m³ | |
| - | Metal and insoluble compounds, (inhalable fraction) | 10 mg/m³ | 20 mg/m³ | |
| - | Metal and insoluble compounds, (respirable fraction) | 3 mg/m³ | 6 mg/m³ | |
| 6923-22-4 | Monocrotophos (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 110-91-8 | Morpholine | 20 ppm | 30 ppm | Skin |
| 300-76-5 | Naled, (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | Skin, SEN |
| 91-20-3 | Naphthalene | 10 ppm | 15 ppm | Skin |
| 8006-14-2 | Natural gas | See Aliphatic hydrocarbon gases: Alkane [C1-C4] | ||
| 2595507 | Natural rubber latex (as total proteins), (inhalable fraction) | 0.001 mg/m³ | 0.003 mg/m³ | Skin, SEN |
| 36571 | Nickel, (as Ni): | |||
| - | Elemental (inhalable fraction) | 1.5 mg/m³ | 3 mg/m³ | Schedule R |
| - | Soluble inorganic compounds, (not otherwise specified) (inhalable fraction) | 0.1 mg/m³ | 0.3 mg/m³ | |
| - | Insoluble inorganic, (as not otherwise specified) (inhalable fraction) | 0.2 mg/m³ | 0.6 mg/m³ | |
| 12035-72-2 | Nickel subsulphide, (as Ni), (inhalable fraction) | 0.1 mg/m³ | 0.3 mg/m³ | Schedule R |
| 13463-39-3 | Nickel carbonyl, (as Ni) | 0.05 ppm | 0.15 ppm | |
| 54-11-5 | Nicotine | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 1929-82-4 | Nitrapyrin | 10 mg/m³ | 20 mg/m³ | |
| 7697-37-2 | Nitric acid | 2 ppm | 4 ppm | |
| 10102-43-9 | Nitric oxide | 25 ppm | 38 ppm | |
| 100-01-6 | p-Nitroaniline | 3 mg/m³ | 6 mg/m³ | Skin |
| 98-95-3 | Nitrobenzene | 1 ppm | 2 ppm | Skin |
| 100-00-5 | p-Nitrochlorobenzene | 0.1 ppm | 0.3 ppm | Skin |
| 79-24-3 | Nitroethane | 100 ppm | 125 ppm | |
| 10102-44-0 | Nitrogen dioxide | 3 ppm | 5 ppm | |
| 7783-54-2 | Nitrogen trifluoride | 10 ppm | 20 ppm | |
| 55-63-0 | Nitroglycerin (NG) | 0.05 ppm | 0.15 ppm | Skin |
| 75-52-5 | Nitromethane | 20 ppm | 30 ppm | |
| 108-03-2 | 1-Nitropropane | 25 ppm | 40 ppm | |
| 79-46-9 | 2-Nitropropane | 10 ppm | 20 ppm | Schedule R |
| 88-72-2; 99-08-1; 99-99-0 | Nitrotoluene isomers | 2 ppm | 3 ppm | Skin |
| 10024-97-2 | Nitrous oxide | 50 ppm | 75 ppm | |
| 111-84-2 | Nonane, all isomers | 200 ppm | 250 ppm | |
| 2234-13-1 | Octachloronaphthalene | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 111-65-9 | Octane, all isomers | 300 ppm | 375 ppm | |
| 8012-95-1 | Oil mist, mineral | 5 mg/m³ | 10 mg/m³ | |
| 20816-12-0 | Osmium tetroxide, (as Os) | 0.0002 ppm | 0.0006 ppm | |
| 144-62-7 | Oxalic acid | 1 mg/m³ | 2 mg/m³ | |
| 80-51-3 | p,p'-Oxybis(benzenesulphonyl hydrazide), (inhalable fraction) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 7783-41-7 | Oxygen difluoride | **C0.05 ppm | ||
| 10028-15-6 | Ozone | 0.05 ppm | 0.15 ppm | |
| 8002-74-2 | Paraffin wax fume | 2 mg/m³ | 4 mg/m³ | |
| 4685-14-7 | Paraquat, total dust | 0.5 mg/m³ | 1.5 mg/m³ | |
| - | Paraquat, (respirable fraction) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 56-38-2 | Parathion, (inhalable fraction and vapour) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| - | Particulate polycyclic aromatic hydrocarbons (PPAH), as benzene solubles, See Coal tar pitch volatiles | 0.2 mg/m³ | 0.6 mg/m³ | Schedule R |
| - | Particles (Insoluble or Poorly Soluble) Not Otherwise Specified: | |||
| - | Inhalable fraction | 10 mg/m³ | 20 mg/m³ | |
| - | Respirable fraction | 3 mg/m³ | 6 mg/m³ | |
| 19624-22-7 | Pentaborane | 0.005 ppm | 0.015 ppm | |
| 1321-64-8 | Pentachloronaphthalene | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 82-68-8 | Pentachloronitrobenzene | 0.5 mg/m³ | 1.5 mg/m³ | |
| 87-86-5 | Pentachlorophenol | 0.5 mg/m³ | 1.5 mg/m³ | Skin |
| 115-77-5 | Pentaerythritol | 10 mg/m³ | 20 mg/m³ | |
| 78-78-4; 109-66-0; 463-82-1 | Pentane, all isomers | 600 ppm | 750 ppm | |
| 628-63-7; 626-38-0; 123-92-2; 625-16-1; 624-41-9; 620-11-1 | Pentyl acetate, all isomers | 50 ppm | 100 ppm | |
| 594-42-3 | Perchloromethyl mercaptan | 0.1 ppm | 0.3 ppm | |
| 7616-94-6 | Perchloryl fluoride | 3 ppm | 6 ppm | |
| 19430-93-4 | Perfluorobutyl ethylene | 100 ppm | 150 ppm | |
| 382-21-8 | Perfluoroisobutylene | **C0.01 ppm | ||
| 93763-70-3 | Perlite | 10 mg/m³ | 20 mg/m³ | |
| - | Persulphates, as persulphate | 0.1 mg/m³ | 0.3 mg/m³ | |
| 108-95-2 | Phenol | 5 ppm | 7.5 ppm | Skin |
| 92-84-2 | Phenothiazine | 5 mg/m³ | 10 mg/m³ | Skin |
| 95-54-5; 108-45-2; 106-50-3 | Phenylene diamine isomers | 0.1 mg/m³ | 0.3 mg/m³ | |
| 101-84-8 | Phenyl ether (vapour) | 1 ppm | 2 ppm | |
| 122-60-1 | Phenyl glycidyl ether (PGE) | 0.1 ppm | 0.3 ppm | Skin, SEN, Schedule R |
| 100-63-0 | Phenyl hydrazine | 0.1 ppm | 0.3 ppm | Skin, Schedule R |
| 108-98-5 | Phenyl mercaptan | 0.1 ppm | 0.3 ppm | Skin |
| 638-21-1 | Phenylphosphine | **C0.05 ppm | ||
| 298-02-2 | Phorate (inhalable fraction and vapour) | 0.05 mg/m³ | 0.2 mg/m³ | Skin |
| 75-44-5 | Phosgene (Carbonyl chloride) | 0.1 ppm | 0.3 ppm | |
| 7803-51-2 | Phosphine | 0.3 ppm | 1 ppm | |
| 7664-38-2 | Phosphoric acid | 1 mg/m³ | 3 mg/m³ | |
| 12185-10-3 | Phosphorus (yellow) | 0.1 mg/m³ | 0.3 mg/m³ | |
| 10025-87-3 | Phosphorous oxychloride | 0.1 ppm | 0.3 ppm | |
| 10026-13-8 | Phosphorous pentachloride | 0.1 ppm | 0.3 ppm | |
| 1314-80-3 | Phosphorous pentasulphide | 1 mg/m³ | 3 mg/m³ | |
| 7719-12-2 | Phosphorous trichloride | 0.2 ppm | 0.5 ppm | |
| 85-44-9 | Phthalic anhydride | 1 ppm | 2 ppm | SEN |
| 626-17-5 | m-Phthalodinitrile | 5 mg/m³ | 10 mg/m³ | |
| 6606 | Picloram | 10 mg/m³ | 20 mg/m³ | |
| 88-89-1 | Picric acid | 0.1 mg/m³ | 0.3 mg/m³ | |
| 83-26-1 | Pindone | 0.1 mg/m³ | 0.3 mg/m³ | |
| 142-64-3 | Piperazine dihydrochloride | 5 mg/m³ | 10 mg/m³ | |
| 7778-18-9 | Plaster of Paris (Calcium sulphate) | 10 mg/m³ | 20 mg/m³ | |
| 38153 | Platinum: | |||
| - | metal | 1 mg/m³ | 3 mg/m³ | |
| - | soluble salt, (as Pt) | 0.002 mg/m³ | 0.006 mg/m³ | |
| 65997-15-1 | Portland cement | 10 mg/m³ | 20 mg/m³ | |
| 1310-58-3 | Potassium hydroxide | **C2 mg/m³ | ||
| 74-98-6 | Propane | See Aliphatic hydrocarbon gases [C1-C4] | ||
| 107-19-7 | Propargyl alcohol | 1 ppm | 3 ppm | Skin |
| 57-57-8 | beta-Propriolactone | 0.5 ppm | 1 ppm | Schedule R |
| 123-38-6 | Propionaldehyde | 20 ppm | 30 ppm | |
| 79-09-4 | Propionic acid | 10 ppm | 15 ppm | |
| 114-26-1 | Propoxur | 0.5 mg/m³ | 1.5 mg/m³ | |
| 109-60-4 | n-Propyl acetate | 200 ppm | 250 ppm | |
| 71-23-8 | Propyl alcohol (n-propanol) | 200 ppm | 400 ppm | |
| 78-87-5 | Propylene dichloride | 75 ppm | 110 ppm | |
| 6423-43-4 | Propylene glycol dinitrate | 0.05 ppm | 0.15 ppm | Skin |
| 107-98-2 | Propylene glycol monomethyl ether (PGME or 1-methoxy-2- propanol) | 100 ppm | 150 ppm | |
| 75-56-9 | Propylene oxide | 2 ppm | 4 ppm | SEN, Schedule R |
| 75-55-8 | Propylenimine | 2 ppm | 4 ppm | Skin, Schedule R |
| 627-13-4 | n-Propyl nitrate | 25 ppm | 40 ppm | |
| 8003-34-7 | Pyrethrum | 5 mg/m³ | 10 mg/m³ | |
| 110-86-1 | Pyridine | 1 ppm | 3 ppm | |
| 106-51-4 | Quinone | 0.1 ppm | 0.3 ppm | |
| 108-46-3 | Resorcinol | 10 ppm | 20 ppm | |
| 7440-16-6 | Rhodium, (as Rh): | |||
| - | Metal and insoluble compounds | 1 mg/m³ | 3 mg/m³ | |
| - | Soluble compounds | 0.01 mg/m³ | 0.03 mg/m³ | |
| 299-84-3 | Ronnel | 10 mg/m³ | 20 mg/m³ | |
| 83-79-4 | Rotenone (commercial) | 5 mg/m³ | 10 mg/m³ | |
| - | Rouge | 10 mg/m³ | 20 mg/m³ | |
| 8030-30-6 | Rubber solvent (Naphtha) | 400 ppm | 500 ppm | |
| 7782-49-2 | Selenium and compounds, (as Se) | 0.2 mg/m³ | 0.6 mg/m³ | |
| 7783-79-1 | Selenium hexafluoride, (as Se) | 0.05 ppm | 0.15 ppm | |
| 136-78-7 | Sesone | 10 mg/m³ | 20 mg/m³ | |
| - | Silica Amorphous: | |||
| 61790-53-2 | Diatomaceous earth (uncalcined) (inhalable fraction) | 10 mg/m³ | 20 mg/m³ | |
| 61790-53-2 | Diatomaceous earth (uncalcined) (respirable fraction) | 3 mg/m³ | 6 mg/m³ | |
| 112926-00-8 | Precipitated silica and silica gel | 10 mg/m³ | 20 mg/m³ | |
| 69012-46-2 | Silica, fume (respirable fraction) | 2 mg/m³ | ||
| 60676-86-0 | Silica, fused (respirable fraction) | 0.1 mg/m³ | ||
| - | Silica - Crystalline#: | |||
| 14464-46-1 | Cristobalite (respirable fraction) | 0.05 mg/m³ | ||
| 14808-60-7 | Quartz (respirable fraction) | 0.05 mg/m³ | Schedule R | |
| 1317-95-9 | Tripoli, as quartz (respirable fraction) | 0.1 mg/m³ | ||
| 7440-21-3 | Silicon | 10 mg/m³ | 20 mg/m³ | |
| 409-21-2 | Silicon Carbide | |||
| - | Nonfibrous, (inhalable fraction) | 10 mg/m³ | 20 mg/m³ | |
| - | Nonfibrous, (respirable fraction) | 3 mg/m³ | 6 mg/m³ | |
| - | Fibrous (including whiskers), (respirable fibres) | 0.1 f/cc## | Schedule R | |
| 7803-62-5 | Silicon tetrahydride (Silane) | 5 ppm | 10 ppm | |
| 7440-22-4 | Silver, metal | 0.1 mg/m³ | 0.3 mg/m³ | |
| - | Silver soluble compounds, (as Ag) | 0.01 mg/m³ | 0.03 mg/m³ | |
| - | Soapstone (total dust) | 6 mg/m³ | ||
| - | Soapstone (respirable fraction) | 3 mg/m³ | 6 mg/m³ | |
| 39559 | Sodium azide: | |||
| - | as Sodium azide | **C0.29 mg/m³ | ||
| - | as Hydrazoic acid vapour | **C0.11 ppm | ||
| 7631-90-5 | Sodium bisulphite | 5 mg/m³ | 10 mg/m³ | |
| 62-74-8 | Sodium fluoroacetate | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 1310-73-2 | Sodium hydroxide | **C2 mg/m³ | ||
| 7681-57-4 | Sodium metabisulphite | 5 mg/m³ | 10 mg/m³ | |
| 9005-25-8 | Starch | 10 mg/m³ | 20 mg/m³ | |
| - | Stearates | 10 mg/m³ | 20 mg/m³ | |
| 7803-52-3 | Stibine (Antimony hydride) | 0.1 ppm | 0.3 ppm | |
| 8052-41-3 | Stoddard solvent | 100 ppm | 125 ppm | |
| 2151065 | Strontium chromate, (as Cr) | 0.0005 mg/m³ | 0.0015 mg/m³ | Schedule R |
| 57-24-9 | Strychnine | 0.15 mg/m³ | 0.45 mg/m³ | |
| 100-42-5 | Styrene, monomer | 20 ppm | 40 ppm | Schedule R |
| 1395-21-7; 9014-01-1 | Subtilisins, (as crystalline active enzyme) | **C0.00006 mg/m³ | ||
| 57-50-1 | Sucrose | 10 mg/m³ | 20 mg/m³ | |
| 3689-24-5 | Sulphotep (TEDP) (inhalable fraction and vapour) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 38616 | Sulphur dioxide | 2 ppm | 5 ppm | |
| 2551-62-4 | Sulphur hexafluoride | 1000 ppm | 1250 ppm | |
| 7664-93-9 | Sulphuric acid, (thoracic fraction) | 0.2 mg/m³ | 0.6 mg/m³ | Schedule R, strong acid mists only |
| 10025-67-9 | Sulphur monochloride | **C1 ppm | ||
| 5714-22-7 | Sulphur pentafluoride | **C0.01 ppm | ||
| 7783-60-0 | Sulphur tetrafluoride | **C0.1 ppm | ||
| 2699-79-8 | Sulphuryl fluoride 5 ppm | 5 ppm | 10 ppm | |
| 35400-43-2 | Sulprofos | 1 mg/m³ | 3 mg/m³ | |
| - | Synthetic Vitreous Fibres: | |||
| - | Continous filament glass fibres, (respirable fibres) | 1 f/cc## | 3 f/cc | |
| - | Continous filament glass fibres, (inhalable fraction) | 5 mg/m³ | 10 mg/m³ | |
| - | Glass wool fibres, (respirable fibres) | 1 f/cc | 3 f/cc | |
| - | Rock wool fibres, (respirable fibres) | 1 f/cc | 3 f/cc | |
| - | Slag wool fibres, (respirable fibres) | 1 f/cc | 3 f/cc | |
| - | Special purpose glass fibres, (respirable fibres) | 1 f/cc | 3 f/cc | |
| - | Refractory ceramic fibres, (respirable fibres) | 0.2 f/cc | Schedule R | |
| 93-76-5 | 2,4,5-T | 10 mg/m³ | 20 mg/m³ | |
| 14807-96-6 | Talc, (respirable fraction) | 2 mg/m³ | ||
| 7440-25-7 | Tantalum metal and oxide, (as Ta) | 5 mg/m³ | 10 mg/m³ | |
| 7783-80-4 | Tellurium hexafluoride, (as Te) | 0.02 ppm | 0.03 ppm | |
| 13494-80-9 | Tellurium and other tellurium compounds, (as Te) excluding hydrogen telluride | 0.1 mg/m³ | 0.3 mg/m³ | |
| 3383-96-8 | Temephos, (inhalable fraction and vapour) | 1 mg/m³ | 3 mg/m³ | Skin |
| 13071-79-9 | Terbufos, (inhalable fraction and vapour) | 0.01 mg/m³ | 0.03 mg/m³ | Skin |
| 100-21-0 | Terephthalic acid | 10 mg/m³ | 20 mg/m³ | |
| 26140-60-3 | Terphenyls | **C5 mg/m³ | ||
| 76-11-9 | 1,1,1,2-Tetrachloro-2, 2- difluoroethane | 500 ppm | 625 ppm | |
| 76-12-0 | 1,1,2,2-Tetrachloro-1, 2- difluoroethane | 500 ppm | 625 ppm | |
| 79-34-5 | 1,1,2,2-Tetrachloroethane | 1 ppm | 2 ppm | Skin |
| 127-18-4 | Tetrachloroethylene (Perchloroeth ylene) | 25 ppm | 100 ppm | Schedule R |
| 1335-88-2 | Tetrachloronaphthalene | 2 mg/m³ | 4 mg/m³ | |
| 78-00-2 | Tetraethyl lead, (as Pb) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 107-49-3 | Tetraethyl pyrophosphate (TEPP) | 0.05 mg/m³ | 0.15 mg/m³ | Skin |
| 116-14-3 | Tetrafluoroethylene | 2 ppm | 4 ppm | Schedule R |
| 109-99-9 | Tetrahydrofuran | 50 ppm | 100 ppm | Skin |
| - | Tetrakis (hydroxymethyl) phosphonium salts: | |||
| 124-64-1 | Tetrakis (hydroxymethyl) phosphonium chloride | 2 mg/m³ | 4 mg/m³ | |
| 55566-30-8 | Tetrakis (hydroxymethyl) phosphonium sulphate | 2 mg/m³ | 4 mg/m³ | SEN |
| 75-74-1 | Tetramethyl lead, (as Pb) | 0.15 mg/m³ | 0.45 mg/m³ | Skin |
| 3333-52-6 | Tetramethyl succinonitrile | 0.5 ppm | 1 ppm | Skin |
| 509-14-8 | Tetranitromethane | 0.005 ppm | 0.015 ppm | Schedule R |
| 7722-88-5 | Tetrasodium pyrophosphate | 5 mg/m³ | 10 mg/m³ | |
| 479-45-8 | Tetryl (2,4,6-trinitrophenyl- methyl nitramine) | 1.5 mg/m³ | 3 mg/m³ | |
| 7440-28-0 | Thallium and soluble compounds, (as Tl) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 96-69-5 | 4,4'-Thiobis (6-tert-butyl-m- cresol) | 10 mg/m³ | 20 mg/m³ | |
| 68-11-1 | Thioglycolic acid | 1 ppm | 2 ppm | Skin |
| 2125594 | Thionyl chloride | **C1 ppm | ||
| 137-26-8 | Thiram | 1 mg/m³ | 3 mg/m³ | |
| 7440-31-5 | Tin, (as Sn): | |||
| - | metal | 2 mg/m³ | 4 mg/m³ | |
| - | oxide and inorganic compounds except SnH4 | 2 mg/m³ | 4 mg/m³ | |
| - | organic compounds | 0.1 mg/m³ | 0.2 mg/m³ | Skin |
| 13463-67-7 | Titanium dioxide | 10 mg/m³ | 20 mg/m³ | |
| 108-88-3 | Toluene (toluol) | 50 ppm | 60 ppm | Skin |
| 584-84-9; 91-08-7 | Toluene-2,4- or 2,6- diisocyanate (TDI) | 0.005 ppm | 0.02 ppm | SEN |
| 95-53-4 | o-Toluidine | 2 ppm | 4 ppm | Skin, Schedule R |
| 108-44-1 | m-Toluidine | 2 ppm | 4 ppm | Skin |
| 106-49-0 | p-Toluidine | 2 ppm | 4 ppm | Skin, Schedule R |
| 126-73-8 | Tributyl phosphate | 0.2 ppm | 0.4 ppm | |
| 76-03-9 | Trichloroacetic acid | 1 ppm | 2 ppm | |
| 120-82-1 | 1,2,4-Trichlorobenzene | **C5 ppm | ||
| 71-55-6 | 1,1,1-Trichloroethane | 350 ppm | 450 ppm | |
| 79-00-5 | 1,1,2-Trichloroethane | 10 ppm | 15 ppm | Skin |
| 79-01-6 | Trichloroethylene | 50 ppm | 100 ppm | |
| 75-69-4 | Trichlorofluoromethane | **C1000 ppm | ||
| 1321-65-9 | Trichloronaphthalene | 5 mg/m³ | 10 mg/m³ | Skin |
| 96-18-4 | 1,2,3-Trichloropropane | 10 ppm | 15 ppm | Skin |
| 76-13-1 | 1,1,2-Trichloro-1,2,2- trifluoroethane | 1000 ppm | 1250 ppm | |
| 52-68-6 | Trichlorphon, (inhalable fraction) | 1 mg/m³ | 3 mg/m³ | |
| 102-71-6 | Triethanolamine | 5 mg/m³ | 10 mg/m³ | |
| 121-44-8 | Triethylamine | 1 ppm | 3 ppm | Skin |
| 75-63-8 | Trifluorobromomethane | 1000 ppm | 1200 ppm | |
| 2451-62-9 | 1,3,5-Triglycidyl-s-triazinetrione | 0.05 mg/m³ | 0.15 mg/m³ | |
| 552-30-7 | Trimellitic anhydride | **C0.04 mg/m³ | ||
| 75-50-3 | Trimethylamine | 5 ppm | 15 ppm | |
| 25551-13-7 | Trimethyl benzene (mixed isomer) | 25 ppm | 30 ppm | |
| 121-45-9 | Trimethyl phosphite | 2 ppm | 4 ppm | |
| 118-96-7 | 2,4,6-Trinitrotoluene (TNT) | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 78-30-8 | Triorthocresyl phosphate | 0.1 mg/m³ | 0.3 mg/m³ | Skin |
| 603-34-9 | Triphenylamine | 5 mg/m³ | 10 mg/m³ | |
| 115-86-6 | Triphenyl phosphate | 3 mg/m³ | 6 mg/m³ | |
| 7440-33-7 | Tungsten, (as W): | |||
| - | metal and insoluble compounds | 5 mg/m³ | 10 mg/m³ | |
| - | soluble compounds | 1 mg/m³ | 3 mg/m³ | |
| 8006-64-2; 80-56-8; 127-91-3; 13466-78-9 | Turpentine and selected monoterpenes | 20 ppm | 30 ppm | SEN |
| 7440-61-1 | Uranium (natural) | |||
| - | Soluble and insoluble compounds, (as U) | 0.2 mg/m³ | 0.6 mg/m³ | Schedule R |
| 110-62-3 | n-Valeraldehyde | 50 ppm | 60 ppm | |
| 1314-62-1 | Vanadium pentoxide, as V2O5, dust and fume (respirable fraction) | 0.05 mg/m³ | 0.15 mg/m³ | |
| - | Vegetable oil mists | 10 mg/m³ | 20 mg/m³ | |
| 108-05-4 | Vinyl acetate | 10 ppm | 15 ppm | |
| 593-60-2 | Vinyl bromide | 0.5 ppm | 1.5 ppm | Schedule R |
| 100-40-3 | 4-Vinyl cyclohexene | 0.1 ppm | 0.3 ppm | Schedule R |
| 106-87-6 | Vinyl cyclohexene dioxide | 0.1 ppm | 0.3 ppm | Skin, Schedule R |
| 75-02-5 | Vinyl fluoride | 1 ppm | 3 ppm | Schedule R |
| 88-12-0 | N-Vinyl-2-pyrrolidone | 0.05 ppm | 0.15 ppm | |
| 75-35-4 | Vinylidene chloride | 5 ppm | 10 ppm | |
| 75-38-7 | Vinyledene fluoride | 500 ppm | 625 ppm | |
| 25013-15-4 | Vinyl toluene | 50 ppm | 100 ppm | |
| 8032-32-4 | VM and P Naphtha | 300 ppm | 375 ppm | |
| 81-81-2 | Warfarin | 0.1 mg/m³ | 0.3 mg/m³ | |
| - | Welding fumes | 5 mg/m³ | 10 mg/m³ | |
| - | Wood dust: | |||
| - | Softwoods | 5 mg/m³ | 10 mg/m³ | Schedule R (certain species), SEN* (certain species, see list at end of table) |
| - | Certain hardwoods such as beech and oak | 1 mg/m³ | 3 mg/m³ | Schedule R (certain species), SEN* (certain species, see list at end of |
| 1330-20-7; 95-47-6; 108-38-3; 106-42-3 | Xylene (o, m-, p-isomers) | 100 ppm | 150 ppm | |
| 1477-55-0 | m-Xylene alpha, alpha'-diamine | **C0.1 mg/m³ | Skin | |
| 1300-73-8 | Xylidine, mixed isomers (inhalable fraction and vapour) | 0.5 ppm | 1 ppm | Schedule R, Skin |
| 7440-65-5 | Yttrium metal and compounds, (as Y) | 1 mg/m³ | 3 mg/m³ | |
| 7646-85-7 | Zinc chloride fume | 1 mg/m³ | 2 mg/m³ | |
| 13530-65-9; 11103-86-9; 37300-23-5 | Zinc chromates, as Cr | 0.01 mg/m³ | 0.03 mg/m³ | Schedule R |
| 7440-67-7 | Zirconium and compounds, (as Zr) | 5 mg/m³ | 10 mg/m³ | |
Notes:
* "CAS" means the Chemical Abstracts Service Division of the American Chemical Society
**mg/m3 or ppm means milligrams of substance per cubic metre of air; ppm - parts (volume) of substance per million parts (volume) of air
**C - ceiling limit
# - Trydimite removed
## - Fibres per cubic centimetre of air
Explanation of Notations:
Schedule Q - Substance is also listed in Schedule Q and subject to sections to referred to in that Schedule
Skin - Potentially harmful after absorption through the skin or mucous membranes
SEN - Well demonstrated potential to produce sensitization
SEN* - Wood species suspected of inducing sensitization (see Table D)
A Table
| Inhalable fraction: | |
| For the application of this limit, inhalable fraction is that fraction of the aerosol that passes a size selector with the following characteristics: | |
| Particle Aerodynamic Diameter (Mum) | Inhalable Particulate Mass (IPM) (%) |
| 100 | |
| 1 | 97 |
| 2 | 94 |
| 5 | 87 |
| 10 | 77 |
| 20 | 65 |
| 30 | 58 |
| 40 | 54.5 |
| 50 | 52.5 |
| 100 | 50 |
B Table
| Respirable fraction: | |
| For the application of this limit, respirable fraction is that fraction of the aerosol that passes a size selector with the following characteristics: | |
| Particle Aerodynamic Diameter (Mum) | Respirable Particulate Mass (RPM) (%) |
| 0 | 100 |
| 1 | 97 |
| 2 | 91 |
| 3 | 74 |
| 4 | 50 |
| 5 | 30 |
| 6 | 17 |
| 7 | 9 |
| 8 | 5 |
| 10 | 1 |
C Table
| Thoracic fraction: | |
| For the application of this limit, thoracic fraction is that fraction of the aerosol that passes a size selector with the following characteristics: | |
| Particle Aerodynamic Diameter (Mum) | Thoracic Particulate Mass (TPM)(%) |
| 0 | 100 |
| 2 | 94 |
| 4 | 89 |
| 6 | 80.5 |
| 8 | 67 |
| 10 | 50 |
| 12 | 35 |
| 14 | 23 |
| 16 | 15 |
| 18 | 9.5 |
| 20 | 6 |
| 25 | 2 |
D Commercially Important Tree Species Suspected of Inducing Sensitization
| Wood Type | Common | Latin |
| Softwood | California redwood | Sequoia sempervirens |
| Eastern white cedar | Thuja occidentalis | |
| Pine | Pinus | |
| Western red cedar | Thuja plicata | |
| Hardwood | Ash | Fraxinus americana |
| Aspen/Poplar/Cottonwood | Popilus | |
| Beech | Fagus | |
| Oak | Quercus | |
| Tropical Wood | Abirucana | Pouteria |
| African zebra | Microberlinia | |
| Antiaris | Antiaris africana Antiaris toxicara | |
| Cabreuva | Myrocarpus fastigiatus | |
| Cedar of Lebanon | Cedra libani | |
| Central American walnut | Juglans olanchana | |
| Cocabolla | Dalbergia retusa | |
| African ebony | Diospryos crassiflora | |
| Fernam bouc | Caesalpinia | |
| Honduras rosewood | Dalbergia stevensonii | |
| Iroko or kambala | Chlorophora excelsa | |
| Kejaat | Pterocarpus angolensis | |
| Kotobe | Nesorgordonia papaverifera | |
| Limba | Terminalia superba | |
| Mahogany (African) | Khaya spp. | |
| Makore | Tieghemella heckelii | |
| Mansonia/Beté | Mansonia altissima | |
| Nara | Pterocarpus indicus | |
| Obeche/African maple/Samba | Triplochiton scleroxylon | |
| Palisander/Brazilian rosewood/ Tulip wood/Jakaranda | Dalbergia nigra | |
| Pau marfim | Balfourdendron riedelianum | |
| Ramin | Gonystylus bancanus | |
| Soapbark dust | Quillaja saponaria | |
| Spindle tree wood | Euonymus europaeus |
Schedule R Designated Chemical and Biological Substances
1. Any mixture containing less than 1% of any chemical substance listed in Schedule Q.
2. Any of the following chemical substances:
Table
| CAS* NUMBER | CHEMICAL SUBSTANCE |
| 75-07-0 | Acetaldehyde |
| 60-35-5 | Acetamide |
| 79-06-1 | Acrylamide |
| 107-13-1 | Acrylonitrile |
| 1402-68-2 | Aflatoxins |
| 60-09-3 | para-Aminoazobenzene |
| 97-56-3 | ortho-Aminoazotoluene |
| 712-68-5 | 2-Amino-5(5-nitro-2-furyl)-1,3, 4-thiadiazole |
| 61-82-5 | Amitrole |
| 90-04-0 | ortho-Anisidine |
| 1309-64-4 | Antimony trioxide |
| 7440-38-2 | Arsenic and arsenic mixtures |
| 1332-21-4 | Asbestos |
| 1912-24-9 | Atrazine |
| 151-56-4 | Aziridine |
| 98-87-3 | Benzal chloride |
| 71-43-2 | Benzene |
| - | Benzidine-based dyes |
| 271-89-6 | Benzofuran |
| 98-07-7 | Benzotrichloride |
| 98-88-4 | Benzoyl chloride |
| 100-44-7 | Benzyl chloride |
| 618966 | Benzyl violet 4B |
| - | Beryllium and beryllium compounds |
| 75-27-4 | Bromodichloromethane |
| 3296-90-0 | 2,2-bis(bromomethyl)propane-1,3,-diol |
| 106-99-0 | 1,3-Butadiene |
| 3068-88-0 | beta-Butyrolactone |
| 25013-16-5 | Butylated hydroxyanisole |
| - | Cadmium and cadmium compounds |
| 191905 | Captafol |
| 56-23-5 | Carbon tetrachloride |
| 2593402 | Carrageenan, degraded |
| - | Chlordane isomers |
| 115-28-6 | Chlorendic acid |
| - | Chlorinated paraffins |
| 106-47-8 | para-chloroaniline |
| 67-66-3 | Chloroform |
| 95-57-8 | 2-Chlorophenol |
| 108-43-0 | 3-Chlorophenol |
| 106-48-9 | 4-Chlorophenol |
| 95-83-0 | 4-Chloro-ortho-phenylenediamine |
| 95-69-2 | para-Chloro-ortho-toluidine |
| 1897-45-6 | Chlorothalonil |
| - | Chromium compounds, hexavalent |
| 6459-94-5 | CI Red 114 |
| 569-61-9 | CI Basic Red 9 |
| 2429-74-5 | CI Direct Blue 15 |
| 6358-53-8 | Citrus Red 2 |
| 8007-45-2 | Coal-tar pitches |
| 8007-45-2 | Coal-tars |
| - | Cobalt and cobalt compounds |
| 8001-58-9 | Creosotes |
| 120-71-8 | para-Cresidine |
| 4748733 | Cycasin |
| - | DDT and isomers |
| 613-35-4 | N,N'-Diacetylbenzidine |
| 615-05-4 | 2,4-Diaminoanisole |
| 101-80-4 | 4,4'-Diaminodiphenyl ether |
| 95-80-7 | 2,4-Diaminotoluene |
| 334-88-3 | Diazomethane |
| 226-36-8; 224-42-0 | Dibenzacridine |
| 96-12-8 | 1,2-Dibromo-3-chloropropane |
| 79-43-6 | Dichloroacetic acid |
| 106-46-7 | para-Dichlorobenzene |
| 764-41-0 | 1,4-Dichloro-2-butene |
| 107-06-2 | 1,2-Dichloroethane |
| 75-09-2 | Dichloromethane |
| 542-75-6 | 1,3-Dichloropropene (technical grade) |
| 62-73-7 | Dichlorovos |
| 1464-53-5 | Diepoxybutane |
| 117-81-7 | Di(2-ethylhexyl)phthalate |
| - | Diesel engine exhaust |
| 1615-80-1 | 1,2-Diethylhydrazine |
| 64-67-5 | Diethyl sulphate |
| 101-90-6 | Diglycidyl resorcinol ether |
| 2973-10-6 | Diisopropyl sulphate |
| 79-44-7 | Dimethylcarbamoyl chloride |
| 68-12-2 | Dimethylformamide |
| 57-14-7 | 1,1-Dimethylhydrazine |
| 540-73-8 | 1,2-Dimethylhydrazine |
| 77-78-1 | Dimethyl sulphate |
| - | Dinitropyrenes |
| 25321-14-6 | Dinitrotoluene |
| 123-91-1 | 1,4-Dioxane |
| 2475-48-8 | Disperse blue |
| 106-89-8 | Epichlorohydrin |
| 106-88-7 | 1,2-Epoxybutane |
| 66733-21-9 | Erionite |
| 140-88-5 | Ethyl acrylate |
| 74-96-4 | Ethyl bromide |
| 106-93-4 | Ethylene dibromide |
| 75-21-8 | Ethylene oxide |
| 96-45-7 | Ethylene thiourea |
| 62-50-0 | Ethyl methanesulphonate |
| 759-73-9 | N-Ethyl-N-nitrosourea |
| 50-00-0 | Formaldehyde |
| 3570-75-0 | 2-(2-Formylhydrazino)-4(5-nitro-2-furyl)thiazole |
| - | Gasoline |
| 765-34-4 | Glycidaldehyde |
| 2784-94-3 | HC Blue 1 |
| 76-44-8 | Heptachlor |
| 118-74-1 | Hexachlorobenzene |
| 87-68-3 | Hexachlorobutadiene |
| 608-73-1 | Hexachlorocyclohexanes |
| 67-72-1 | Hexachloroethane |
| 680-31-9 | Hexamethylphosphoramide |
| 302-01-2 | Hydrazine |
| 22398-80-7 | Indium phosphide |
| 193-39-5 | Indone[1,2,3-cd]pyrene |
| 78-79-5 | Isoprene |
| 143-50-0 | Kepone |
| - | Lead (compounds), inorganics |
| 632-99-5 | Magenta (contains CI Basic Red 9) |
| - | Marine diesel fuels |
| 484-20-8 | 5-Methoxypsoralen |
| 75-55-8 | 2-Methylaziridine |
| 101-14-4 | 4,4'-Methylene bis(2-chloroaniline) |
| 838-88-0 | 4,4'-Methylene bis(2-methylaniline) |
| 101-77-9 | 4,4'-Methylene dianiline |
| 60-34-4 | Methyl hydrazine |
| 74-88-4 | Methyl iodide |
| - | Methylmercury Compounds |
| 66-27-3 | Methyl methanesulphonate |
| 129-15-7 | 2-Methyl-1-nitroanthraquinone |
| 684-93-5 | N-Methyl-N-nitrosourea |
| 615-53-2 | N-Methyl-N-nitrosourethane |
| 8012-95-1 | Mineral oils, untreated and mildly treated |
| 2385-85-5 | Mirex |
| 50-60-2 | Mustard gas |
| - | Nickel (compounds) |
| 12035-72-2 | Nickel subsulphide |
| - | Nitrilotriacetic acid and its salts |
| 1836-75-5 | Nitrofen (technical grade) |
| 607-57-8 | 2-Nitrofluorene |
| 555-84-0 | 1-[(5-Nitrofurfurylidene)amino]2-imidazolidinone |
| 51-75-2 | Nitrogen mustard |
| 79-46-9 | 2-Nitropropane |
| 5522-43-0; 57835-92-4 | Nitropyrene isomers |
| 924-16-3 | N-Nitrosodi-n-butylamine |
| 1116-54-7 | N-Nitrosodiethanolamine |
| 55-18-5 | N-Nitrosodiethylamine |
| 62-75-9 | N-Nitrosodimethylamine |
| 621-64-7 | N-Nitrosodi-N-propylamine |
| 4549-40-0 | N-Nitrosomethylvinylamine |
| 59-89-2 | N-Nitrosomorpholine |
| 16543-55-8 | N-Nitrosonornicotine |
| 100-75-4 | N-Nitrosopiperidine |
| 930-55-2 | N-Nitrosopyrrolidine |
| 13256-22-9 | N-Nitrososarcosine |
| 2646-17-5 | Oil orange SS |
| 12174-11-7 | Palygorskite (attapulgite) (long fibres, > 5 microns) |
| - | Penta/hexa cyclic unsubstituted aromatic hydrocarbons |
| 135-88-6 | N-Phenyl-beta-naphthylamine |
| 95-54-5 | o-Phenylenediamine |
| 122-60-1 | Phenylglycidyl ether |
| 100-63-0 | Phenylhydrazine |
| 12584427 | Polybrominated biphenyls |
| 1336-36-3 | Polychlorinated biphenyls |
| 3564-908; 3761-53-3 | Ponceau 3R |
| 2139591 | Potassium bromate |
| 1120-71-4 | 1,3-Propane sultone |
| 57-57-8 | Beta-Propiolactone |
| 75-55-8 | Propylene imine |
| 75-56-9 | Propylene oxide |
| - | Refractory ceramic fibres |
| - | Residual fuel oils (heavy fuel oils) |
| 94-59-7 | Safrole |
| 68308-34-9 | Shale-oils |
| - | Silica crystalline (respirable size) |
| 409-21-2 | Silicon carbide, fibrous (including whiskers) |
| 132-27-4 | Sodium ortho-phenylphenate |
| - | Soots from pyrolysis of heating fuels |
| 100-42-5 | Styrene |
| 96-09-3 | Styrene-7,8-oxide |
| 95-06-7 | Sulphallate |
| - | Sulphuric acid (strong acid mist exposure, only) |
| 637719 | 2,3,7,8-Tetrachlorodibenzo-para-dioxin |
| 127-18-4 | Tetrachloroethylene |
| 116-14-3 | Tetrafluoroethylene |
| 509-14-8 | Tetranitromethane |
| 62-55-5 | Thioacetamide |
| 139-65-1 | Thiodianiline |
| 141-90-2 | Thiouracil |
| 62-56-6 | Thiourea |
| 119-93-7 | ortho-Tolidine |
| 584-84-9 | Toluene diisocyanates |
| 95-53-4 | ortho-Toluidine |
| 106-49-0 | para-Toluidine |
| 8001-35-2 | Chlorinated camphene |
| 52-24-4 | Tris(1-aziridinyl)phosphine sulphide |
| 126-72-7 | Tris(2,3-dibromopropyl)phosphate |
| 72-57-1 | Trypan Blue |
| - | Uranium, (natural) soluble and insoluble compounds |
| 51-79-6 | Urethane |
| 108-05-4 | Vinyl acetate |
| 593-60-2 | Vinyl bromide |
| 100-40-3 | 4-Vinyl cyclohexene |
| 106-87-6 | Vinyl cyclohexene dioxide |
| 75-02-5 | Vinyl fluoride |
| - | Wood dusts (Oak, Beech, Birch, Mahogany, Teak and Walnut) |
| 13530-65-9; 11103-86-9; 37300-23-5 | Zinc chromates |
| 1300-73-8 | Xylidine isomers |
*"CAS" means the Chemical Abstracts Service Division of the American Chemical Society
SAFETY ACT
R.S.N.W.T. 1988, c. S-1
HEALTH AND SAFETY
Section 4 Duty of employer
4. (1) Every employer shall
(a) maintain his or her establishment in such a manner that the health and safety of persons in the establishment are not likely to be endangered;
(b) take all reasonable precautions and adopt and carry out all reasonable techniques and procedures to ensure the health and safety of every person in his or her establishment; and
(c) provide the first aid service requirements set out in the regulations pertaining to his or her class of establishment.
(2) If two or more employers have charge of an establishment, the principal contractor or, if there is no principal contractor, the owner of the establishment, shall coordinate the activities of the employers in the establishment to ensure compliance with subsection 4(1).
[S.Nu. 2003, c. 25, s. 4]
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Yellowknife
Centre Square Tower
5th Floor
5022 49 Street
Box 8888, Yellowknife NT
X1A 2R3
General Inquiries:
Phone: (867) 920-3888
Toll-Free: (800) 661-0792
Fax: (867) 873-4596
Toll-Free Fax: (866) 277-3677
Iqaluit
Qamutiq Building
2nd Floor
630 Queen Elizabeth II Way
Box 669, Iqaluit NU
X0A 0H0
General Inquiries:
Phone: (867) 979-8500
Toll-Free: (877) 404-4407
Fax: (867) 979-8501
Toll-Free Fax: (866) 979-8501
Inuvik
Blackstone Building
87 Kingmingya Road
Box 1188, Inuvik NT
X0E 0T0
General Inquiries:
Phone: (867) 678-2301
Fax: (867) 678-2302
