Occupational Health and Safety Code
The Occupational Health and Safety Code provides specific technical health and safety rules and requirements for Alberta workplaces.
Schedule 1 Chemical Substances
Contents
Table 1
Substances and processes requiring a code of practice
[See section 26(1)]
Arsenic and arsenic compounds
Asbestos
Benzene
Beryllium
1,3 Butadiene
Cadmium
Coal tar pitch volatiles
1,2 Dibromoethane (Ethylene dibromide)
Ethylene oxide
Hexachlorobutadiene
Hydrazines
Hydrogen sulphide
Isocyanates
Lead and lead compounds
Methyl bromide
Methyl hydrazine
Perchlorates
Silica crystalline, respirable
Styrene in styrene resin fabrication
Vinyl chloride (Chloroethylene)
Zinc chromate
Table 2
Occupational exposure limits for chemical substances
(1)
A person using this Table may apply either the “mg/m3” or “ppm” measure defined as follows:
“mg/m3” means milligrams of substance per cubic metre of air measured at ambient work site conditions;
“ppm” (parts per million) means parts of a vapour or gas by volume at standard conditions (25ºC and an absolute barometric pressure of 101.3 kilopascals) per parts of contaminated air by volume at ambient work site conditions.
(2)
“f/cc” means fibres per cubic centimetre of air; “CAS” means Chemical Abstracts Service.
(3)
The numbers 1, 2 and 3 in the “Substance Interaction” column have the following meanings:
1 — substance may be readily absorbed through intact skin;
2 — substance is a simple asphyxiant that may create an atmosphere deficient in oxygen; available oxygen in the range of 19.5 percent to 23 percent by volume must be present;
3 — occupational exposure limit is based on irritation effects and its adjustment to compensate for unusual work schedules is not required.
(4)
A carcinogen is defined as “an agent capable of inducing benign or malignant neoplasms.” Based on the weight of evidence from epidemiologic studies, “A1” would be a Confirmed Human Carcinogen and means that the agent is carcinogenic to humans. “A2” would be a Suspected Human Carcinogen and means that human data are accepted as adequate in quality but are conflicting or insufficient to classify the agent as A1 (American Conference of Governmental Industrial Hygienists).
Substance |
CAS |
8‑hour |
15‑minute or |
Substance interaction |
Carcinogenicity |
|||
ppm |
mg/m3 |
f/cc |
ppm |
mg/m3 |
|
|
||
Acetaldehyde |
75‑07‑0 |
‑ |
‑ |
‑ |
(c) 25 |
(c) 45 |
3 |
|
Acetic acid |
64‑19‑7 |
10 |
25 |
‑ |
15 |
37 |
‑ |
|
Acetic anhydride |
108‑24‑7 |
‑ |
‑ |
‑ |
(c) 5 |
(c) 21 |
3 |
|
Acetone |
67‑64‑1 |
500 |
1200 |
‑ |
750 |
1800 |
‑ |
|
Acetone cyanohydrin |
75‑86‑5 |
‑ |
‑ |
‑ |
‑ |
(c) 5 |
1 |
|
Acetonitrile |
75‑05‑8 |
20 |
34 |
‑ |
‑ |
‑ |
3 |
|
Acetophenone |
98‑86‑2 |
10 |
49 |
‑ |
‑ |
‑ |
3 |
|
Acetylene |
74‑86‑2 |
‑ |
‑ |
‑ |
‑ |
‑ |
2 |
|
Acetylene dichloride |
540‑59‑0 156‑59‑2 156‑60‑5 |
200 |
793 |
‑ |
‑ |
‑ |
‑ |
|
Acetylene tetrabromide |
79‑27‑6 |
0.1 |
1.4 |
‑ |
‑ |
‑ |
‑ |
|
Acetylene tetrachloride |
79‑34‑5 |
1 |
6.9 |
‑ |
‑ |
‑ |
1 |
|
Acetylsalicylic acid (Aspirin) |
50‑78‑2 |
‑ |
5 |
‑ |
‑ |
‑ |
3 |
|
Acrolein |
107‑02‑8 |
‑ |
‑ |
‑ |
(c) 0.1 |
(c) 0.2 |
1 |
|
Acrylamide |
79‑06‑1 |
‑ |
0.03 |
‑ |
‑ |
‑ |
1 |
|
Acrylic acid |
79‑10‑7 |
2 |
5.9 |
‑ |
‑ |
‑ |
1,3 |
|
Acrylic acid, n‑butyl ester (n‑Butyl acrylate) |
141‑32‑2 |
2 |
10 |
‑ |
‑ |
‑ |
3 |
|
Acrylic acid, ethyl ester (Ethyl acrylate) |
140‑88‑5 |
5 |
20 |
‑ |
15 |
61 |
‑ |
|
Acrylic acid, methyl ester (Methyl acrylate) |
96‑33‑3 |
2 |
7 |
‑ |
‑ |
‑ |
1 |
|
Acrylonitrile (Vinyl cyanide) |
107‑13‑1 |
2 |
4.3 |
‑ |
‑ |
‑ |
1 |
|
Adipic acid |
124‑04‑9 |
‑ |
5 |
‑ |
‑ |
‑ |
‑ |
|
Adiponitrile |
111‑69‑3 |
2 |
8.8 |
‑ |
‑ |
‑ |
1 |
|
Aldrin |
309‑00‑2 |
‑ |
0.25 |
‑ |
‑ |
‑ |
1 |
|
Aliphatic Hydrocarbon gases, Alkane (C2‑C4) |
‑ |
1000 |
‑ |
‑ |
‑ |
‑ |
‑ |
‑ |
Allyl alcohol |
107‑18‑6 |
0.5 |
1.2 |
‑ |
‑ |
‑ |
1, 3 |
|
Allyl chloride |
107‑05‑1 |
1 |
3.1 |
‑ |
2 |
6.2 |
‑ |
|
Allyl glycidyl ether |
106‑92‑3 |
1 |
4.7 |
‑ |
‑ |
‑ |
‑ |
|
Allyl propyl disulfide |
2179‑59‑1 |
0.5 |
3 |
‑ |
‑ |
‑ |
3 |
|
Alumina (Aluminum oxide) |
1344‑28‑1 |
‑ |
10 |
‑ |
‑ |
‑ |
‑ |
|
Aluminum Metal Dust Pyro powders, as Al Soluble salts, as Al Alkyls, not otherwise specified as Al |
7429‑90‑5 |
‑ ‑ |
5 2 2 |
‑ |
‑ ‑ ‑ |
‑ ‑ ‑ |
‑ 3 3 |
|
Aluminum oxide (Alumina) |
1344‑28‑1 |
‑ |
10 |
‑ |
‑ |
‑ |
‑ |
|
Aminoethanol (Ethanolamine) |
141‑43‑5 |
3 |
7.5 |
‑ |
6 |
15 |
3 |
|
Aminopyridine |
504‑29‑0 |
0.5 |
1.9 |
‑ |
‑ |
‑ |
‑ |
|
Amino‑1,2,4 triazole (Amitrole) |
61‑82‑5 |
‑ |
0.2 |
‑ |
‑ |
‑ |
‑ |
|
Amitrole |
61‑82‑5 |
‑ |
0.2 |
‑ |
‑ |
‑ |
‑ |
|
Ammonia |
7664‑41‑7 |
25 |
17 |
‑ |
35 |
24 |
‑ |
|
Ammonium chloride fume |
12125‑02‑9 |
‑ |
10 |
‑ |
‑ |
20 |
3 |
|
Ammonium perfluorooctanoate |
3825‑26‑1 |
‑ |
0.01 |
‑ |
‑ |
‑ |
1 |
|
Ammonium persulfate (Persulfates) |
7727‑54‑0 |
‑ |
0.1 |
‑ |
‑ |
‑ |
3 |
|
Ammonium sulfamate |
7773‑06‑0 |
‑ |
10 |
‑ |
‑ |
‑ |
‑ |
|
Amosite (Asbestos) |
12172‑73‑5 |
‑ |
‑ |
0.1 |
‑ |
‑ |
‑ |
A1 |
n‑Amyl acetate (1‑Pentyl acetate) |
628‑63‑7 |
50 |
266 |
‑ |
100 |
532 |
3 |
|
Sec‑Amyl acetate (2‑Pentyl acetate) |
626‑38‑0 |
50 |
266 |
‑ |
100 |
532 |
3 |
|
Tert‑Amyl acetate |
625‑16‑1 |
50 |
266 |
‑ |
100 |
532 |
3 |
|
Aniline |
62‑53‑3 |
2 |
7.6 |
‑ |
‑ |
‑ |
1 |
|
o‑Anisidine |
90‑04‑0 |
‑ |
0.5 |
‑ |
‑ |
‑ |
1 |
|
p‑Anisidine |
104‑94‑9 |
‑ |
0.5 |
‑ |
‑ |
‑ |
1 |
|
Antimony & compounds, as Sb |
7440‑36‑0 |
‑ |
0.5 |
‑ |
‑ |
‑ |
3 |
|
Antimony hydride |
7803‑52‑3 |
0.1 |
0.5 |
‑ |
‑ |
‑ |
‑ |
|
ANTU (α‑Naphthylthiourea) |
86‑88‑4 |
‑ |
0.3 |
‑ |
‑ |
‑ |
‑ |
|
Argon |
7440‑37‑1 |
‑ |
‑ |
‑ |
‑ |
‑ |
2 |
|
Arsenic, elemental & inorganic compounds as As |
7440‑38‑2 |
‑ |
0.01 |
‑ |
‑ |
‑ |
‑ |
A1 |
Arsine |
7784‑42‑1 |
0.05 |
0.2 |
‑ |
‑ |
‑ |
‑ |
|
Asbestos, all forms |
1332‑21‑4 12172‑73‑5 12001‑29‑5 12172‑67‑7 |
‑ |
‑ |
0.1 |
‑ |
‑ |
‑ |
A1 |
Asphalt (Petroleum; Bitumen) fume |
8052‑42‑4 |
‑ |
5 |
‑ |
‑ |
‑ |
3 |
|
Atrazine |
1912‑24‑9 |
‑ |
5 |
‑ |
‑ |
‑ |
3 |
|
Azinphos‑methyl (Guthion) |
86‑50‑0 |
‑ |
0.2 |
‑ |
‑ |
‑ |
1 |
|
Barium and soluble compounds, as Ba |
7440‑39‑3 |
‑ |
0.5 |
‑ |
‑ |
‑ |
‑ |
|
Barium sulfate |
7727‑43‑7 |
‑ |
10 |
‑ |
‑ |
‑ |
‑ |
|
Benomyl |
17804‑35‑2 |
0.84 |
10 |
‑ |
‑ |
‑ |
3 |
|
Benzene |
71‑43‑2 |
0.5 |
1.6 |
‑ |
2.5 |
8 |
1 |
A1 |
p‑Benzoquinone (Quinone) |
106‑51‑4 |
0.1 |
0.4 |
‑ |
‑ |
‑ |
‑ |
|
Benzotrichloride (Benzyl trichloride) |
98‑07‑7 |
‑ |
‑ |
‑ |
(c) 0.1 |
(c) 0.8 |
1 |
A2 |
Benzoyl chloride |
98‑88‑4 |
‑ |
‑ |
‑ |
(c) 0.5 |
(c) 2.9 |
3 |
|
Benzoyl peroxide |
94‑36‑0 |
‑ |
5 |
‑ |
‑ |
‑ |
3 |
|
Benzyl acetate |
140‑11‑4 |
10 |
61 |
‑ |
‑ |
‑ |
3 |
|
Benzyl chloride |
100‑44‑7 |
1 |
5.2 |
‑ |
‑ |
‑ |
3 |
|
Benzyl trichloride (Benzotrichloride) |
98‑07‑7 |
‑ |
‑ |
‑ |
(c) 0.1 |
(c) 0.8 |
1 |
A2 |
Beryllium and compounds, as Be |
7440‑41‑7 |
‑ |
0.002 |
‑ |
‑ |
0.01 |
‑ |
A1 |
Biphenyl (Diphenyl) |
92‑52‑4 |
0.2 |
1.3 |
‑ |
‑ |
‑ |
‑ |
|
Bis (2‑dimethylaminoethyl) ether |
3033‑62‑3 |
0.5 |
0.3 |
‑ |
0.15 |
0.9 |
1,3 |
|
Bismuth telluride Undoped, as Bi2Te3 Se‑doped, as Bi2Te3 |
1304‑82‑1 |
‑ ‑ |
10 5 |
‑ ‑ |
‑ ‑ |
‑ ‑ |
‑ ‑ |
|
Bitumen |
8052‑42‑4 |
‑ |
5 |
‑ |
‑ |
‑ |
3 |
|
Borates, tetra, sodium salts, Decahydrate Pentahydrate |
1303‑96‑4 |
‑ ‑ ‑ |
1 1 1 |
‑ |
3 3 3 |
‑ ‑ ‑ |
3 |
|
Boron oxide |
1303‑86‑2 |
‑ |
10 |
‑ |
‑ |
‑ |
3 |
|
Boron tribromide |
10294‑33‑4 |
‑ |
‑ |
‑ |
(c) 1 |
(c) 10 |
‑ |
|
Boron trifluoride |
7637‑07‑2 |
‑ |
‑ |
‑ |
(c) 1 |
(c) 2.8 |
‑ |
|
Bromacil |
314‑40‑9 |
‑ |
10 |
‑ |
‑ |
‑ |
‑ |
|
Bromine |
7726‑95‑6 |
0.1 |
0.7 |
‑ |
0.2 |
1.3 |
‑ |
|
Bromine pentafluoride |
7789‑30‑2 |
0.1 |
0.7 |
‑ |
‑ |
‑ |
3 |
|
Bromochloromethane (Chlorobromomethane) |
74‑97‑5 |
200 |
1060 |
‑ |
‑ |
‑ |
‑ |
|
Bromoethane (Ethyl bromide) |
74‑96‑4 |
5 |
22 |
‑ |
‑ |
‑ |
1 |
|
Bromoform (Tribromomethane) |
75‑25‑2 |
0.5 |
5.2 |
‑ |
‑ |
‑ |
1 |
|
1‑Bromopropane |
106‑44‑5 |
10 |
50 |
‑ |
‑ |
‑ |
‑ |
|
Bromotrifluoromethane (Trifluorobromomethane) |
75‑63‑8 |
1000 |
6090 |
‑ |
‑ |
‑ |
‑ |
|
1,3‑Butadiene |
106‑99‑0 |
2 |
4.4 |
‑ |
‑ |
‑ |
‑ |
A2 |
Butane |
106‑97‑8 |
1000 |
‑ |
‑ |
‑ |
‑ |
‑ |
|
Butanethiol (n‑tyl mercaptan) |
109‑79‑5 |
0.5 |
1.8 |
‑ |
‑ |
‑ |
3 |
|
n‑Butanol (n‑Butyl alcohol) |
71‑36‑3 |
20 |
60 |
‑ |
‑ |
‑ |
3 |
|
sec‑Butanol (sec‑Butyl alcohol) |
78‑92‑2 |
100 |
303 |
‑ |
‑ |
‑ |
‑ |
|
tert‑Butanol (tert‑Butyl alcohol) |
75‑65‑0 |
100 |
303 |
‑ |
‑ |
‑ |
‑ |
|
2‑Butanone (Methyl ethyl ketone) |
78‑93‑3 |
200 |
590 |
‑ |
300 |
885 |
‑ |
|
3‑Buten‑2‑one (Methyl vinyl ketone) |
78‑94‑4 |
‑ |
‑ |
‑ |
(c) 0.2 |
(c) 0.6 |
1 |
|
2‑Butoxyethanol (Ethylene glycol monobutyl ether) |
111‑76‑2 |
20 |
97 |
‑ |
‑ |
‑ |
3 |
|
n‑Butoxyethyl acetate |
112‑07‑2 |
20 |
131 |
‑ |
‑ |
‑ |
‑ |
|
n‑Butyl acetate |
123‑86‑4 |
150 |
713 |
‑ |
200 |
950 |
3 |
|
sec‑Butyl acetate |
105‑46‑4 |
200 |
950 |
‑ |
‑ |
‑ |
3 |
|
tert‑Butyl acetate |
540‑88‑5 |
200 |
950 |
‑ |
‑ |
‑ |
3 |
|
n‑Butyl acrylate |
141‑32‑2 |
2 |
10 |
‑ |
‑ |
‑ |
‑ |
|
n‑Butylamine |
109‑73‑9 |
‑ |
‑ |
‑ |
(c) 5 |
(c) 15 |
1 |
|
Butylated hydroxytoluene (BHT) |
128‑37‑0 |
‑ |
10 |
‑ |
‑ |
‑ |
3 |
|
tert‑Butyl chromate as CrO3 |
1189‑85‑1 |
‑ |
‑ |
‑ |
‑ |
(c) 0.1 |
1 |
|
n‑Butyl glycidyl ether |
2426‑08‑06 |
3 |
16 |
‑ |
‑ |
‑ |
1 |
|
n‑Butyl lactate |
138‑22‑7 |
5 |
30 |
‑ |
‑ |
‑ |
‑ |
|
Butyl mercaptan (Butanethiol) |
109‑79‑5 |
0.5 |
1.8 |
‑ |
‑ |
‑ |
3 |
|
o‑sec‑Butylphenol |
89‑72‑5 |
5 |
31 |
‑ |
‑ |
‑ |
1, 3 |
|
p‑tert‑Butyltoluene |
98‑51‑1 |
1 |
6.1 |
‑ |
‑ |
‑ |
‑ |
|
Cadmium, elemental Cadmium compounds as Cd, respirable |
7440‑43‑9 |
|
0.01 0.002 |
‑ |
‑ |
‑ |
‑ |
A2 A2 |
Calcium carbonate (Aragonite, Calcite, Marble, Vaterite) |
1317‑65‑3 471‑34‑1 |
‑ |
10 |
‑ |
‑ |
‑ |
3 |
|
Calcium chromate, as Cr |
13756‑19‑0 |
‑ |
0.001 |
‑ |
‑ |
‑ |
‑ |
A2 |
Calcium cyanamide |
156‑62‑7 |
‑ |
0.5 |
‑ |
‑ |
‑ |
3 |
|
Calcium hydroxide |
1305‑62‑0 |
‑ |
5 |
‑ |
‑ |
‑ |
3 |
|
Calcium oxide |
1305‑78‑8 |
‑ |
2 |
‑ |
‑ |
‑ |
3 |
|
Calcium silicate, (synthetic, nonfibrous) |
1344‑95‑2 |
‑ |
10 |
‑ |
‑ |
‑ |
3 |
|
Calcium sulphate (Plaster of Paris, Gypsum) |
7778‑18‑9 26499‑65‑0 13397‑24‑5 |
‑ |
10 |
‑ |
‑ |
‑ |
‑ |
|
Camphor, synthetic |
76‑22‑2 |
2 |
12 |
‑ |
3 |
19 |
‑ |
|
Caprolactam |
105‑60‑2 |
‑ |
5 |
‑ |
‑ |
‑ |
‑ |
|
Captafol |
2425‑06‑1 |
‑ |
0.1 |
‑ |
‑ |
‑ |
1,3 |
|
Captan |
133‑06‑2 |
‑ |
5 |
‑ |
‑ |
‑ |
3 |
|
Carbaryl (Sevin®) |
63‑25‑2 |
‑ |
5 |
‑ |
‑ |
‑ |
‑ |
|
Carbofuran |
1563‑66‑2 |
‑ |
0.1 |
‑ |
‑ |
‑ |
‑ |
|
Carbon black |
1333‑86‑4 |
‑ |
3.5 |
‑ |
‑ |
‑ |
‑ |
|
Carbon dioxide |
124‑38‑9 |
5000 |
9000 |
‑ |
30,000 |
54,000 |
‑ |
|
Carbon disulfide |
75‑15‑0 |
1 |
3.1 |
‑ |
‑ |
‑ |
1 |
|
Carbon monoxide |
630‑08‑0 |
25 |
29 |
‑ |
‑ |
‑ |
‑ |
|
Carbon tetrabromide |
558‑13‑4 |
0.1 |
1.4 |
‑ |
0.3 |
4.1 |
‑ |
|
Carbon tetrachloride (Tetrachloromethane) |
56‑23‑5 |
5 |
31 |
‑ |
10 |
63 |
1 |
A2 |
Carbonyl chloride (Phosgene) |
75‑44‑3 |
0.1 |
0.4 |
‑ |
‑ |
‑ |
‑ |
|
Carbonyl fluoride |
353‑50‑4 |
2 |
5.4 |
‑ |
5 |
13 |
‑ |
|
Catechol |
120‑80‑9 |
5 |
23 |
‑ |
‑ |
‑ |
1 |
|
Cellulose |
9004‑34‑6 |
‑ |
10 |
‑ |
‑ |
‑ |
3 |
|
Cesium hydroxide |
21351‑79‑1 |
‑ |
2 |
‑ |
‑ |
‑ |
3 |
|
Chlordane |
57‑74‑9 |
‑ |
0.5 |
‑ |
‑ |
‑ |
1 |
|
Chlorinated camphene (Toxaphene) |
8001‑35‑2 |
‑ |
0.5 |
‑ |
‑ |
1 |
1 |
|
Chlorinated diphenyl oxide |
31242‑93‑0 |
‑ |
0.5 |
‑ |
‑ |
‑ |
‑ |
|
Chlorine |
7782‑50‑5 |
0.5 |
1.5 |
‑ |
1 |
2.9 |
3 |
|
Chlorine dioxide |
10049‑04‑4 |
0.1 |
0.3 |
‑ |
0.3 |
0.8 |
‑ |
|
Chlorine trifluoride |
7790‑91‑2 |
‑ |
‑ |
‑ |
(c) 0.1 |
(c) 0.4 |
‑ |
|
Chloroacetaldehyde |
107‑20‑0 |
‑ |
‑ |
‑ |
(c) 1 |
(c) 0.4 |
3 |
|
Chloroacetone |
78‑95‑5 |
|
|
‑ |
(c) 1 |
(c) 3.8 |
1, 3 |
|
2‑Chloroacetophenone (Phenacyl chloride) |
532‑27‑4 |
0.05 |
0.3 |
‑ |
‑ |
‑ |
3 |
|
Chloroacetyl chloride |
79‑04‑9 |
0.05 |
0.2 |
‑ |
0.15 |
0.7 |
1,3 |
|
Chlorobenzene |
108‑90‑7 |
10 |
46 |
‑ |
‑ |
‑ |
‑ |
|
o‑Chlorobenzylidene malononitrile |
2698‑41‑1 |
‑ |
‑ |
‑ |
(c) 0.05 |
(c) 0.4 |
1 |
|
Chlorobromomethane |
74‑97‑5 |
200 |
1060 |
‑ |
‑ |
‑ |
‑ |
|
2‑Chloro‑1,3‑butadiene (β‑Chloroprene) |
126‑99‑8 |
10 |
36 |
‑ |
‑ |
‑ |
1,3 |
|
Chlorodifluoromethane |
75‑45‑6 |
1000 |
3500 |
‑ |
‑ |
‑ |
‑ |
|
Chlorodiphenyl (42 percent chlorine) (PCBs, Polychlorinated biphenyls – |
53469‑21‑9 |
‑ |
1 |
‑ |
‑ |
‑ |
1 |
|
Chlorodiphenyl (54 percent chlorine) (PCBs, Polychlorinated biphenyls |
11097‑69‑1 |
‑ |
0.5 |
‑ |
‑ |
‑ |
1 |
|
1‑Chloro,2,3‑epoxy‑propane (Epichlorohydrin) |
106‑89‑8 |
0.5 |
1.9 |
‑ |
‑ |
‑ |
1 |
|
Chloroethane (Ethyl chloride) |
75‑00‑3 |
100 |
264 |
‑ |
‑ |
‑ |
1 |
|
2‑Chloroethanol (Ethylene chlorohydrin) |
107‑07‑3 |
‑ |
‑ |
‑ |
(c) 1 |
(c) 3.3 |
1 |
|
Chloroethylene (Vinyl chloride) |
75‑01‑4 |
1 |
2.6 |
‑ |
‑ |
‑ |
‑ |
A1 |
Chloroform (Trichloromethane) |
67‑66‑3 |
10 |
49 |
‑ |
‑ |
‑ |
‑ |
|
Bis(Chloromethyl) ether |
542‑88‑1 |
0.001 |
0.005 |
‑ |
‑ |
‑ |
‑ |
A1 |
p‑Chloronitrobenzene (p‑Nitrochlorobenzene) |
100‑00‑5 |
0.1 |
0.6 |
‑ |
‑ |
‑ |
1 |
|
1‑Chloro‑1‑nitropropane |
600‑25‑9 |
2 |
10 |
‑ |
‑ |
‑ |
‑ |
|
Chloropentafluoroethane |
76‑15‑3 |
1000 |
6300 |
‑ |
‑ |
‑ |
‑ |
|
Chloropicrin (Trichloronitromethane) |
76‑06‑2 |
0.1 |
0.7 |
‑ |
‑ |
‑ |
‑ |
|
1‑Chloro‑2‑propanol and 2‑Chloro‑1‑propanol |
127‑00‑4 78‑89‑7 |
1 |
4 |
‑ |
‑ |
‑ |
1 |
|
β‑Chloroprene |
126‑99‑8 |
10 |
36 |
‑ |
‑ |
‑ |
1,3 |
|
2‑Chloropropionic acid |
598‑78‑7 |
0.1 |
0.4 |
‑ |
‑ |
‑ |
1 |
|
o‑Chlorostyrene |
2039‑87‑4 |
50 |
283 |
‑ |
75 |
425 |
‑ |
|
o‑Chlorotoluene |
95‑49‑8 |
50 |
259 |
‑ |
‑ |
‑ |
3 |
|
2‑Chloro‑6‑(trichloromethyl) pyridine (Nitrapyrin) |
1929‑82‑4 |
‑ |
10 |
‑ |
‑ |
20 |
‑ |
|
Chlorpyrifos |
2921‑88‑2 |
‑ |
0.1 |
‑ |
‑ |
‑ |
1 |
|
Chromite ore processing (Chromate), |
‑ |
‑ |
0.05 |
‑ |
‑ |
‑ |
‑ |
A1 |
Chromium, metal and inorganic compounds, as Cr Metal and Cr III compounds Water‑soluble Cr VI compounds Insoluble Cr VI compounds |
7440‑47‑3
|
‑ ‑ ‑ |
0.5 0.05 0.01 |
‑ ‑ ‑ |
‑ ‑ ‑ |
‑ ‑ ‑ |
3 ‑ ‑ |
A1 A1 |
Chromyl chloride |
14977‑61‑8 |
0.025 |
0.2 |
‑ |
‑ |
‑ |
3 |
|
Chrysotile (Asbestos) |
12001‑29‑5 |
‑ |
‑ |
0.1 |
‑ |
‑ |
‑ |
A1 |
Clopidol |
2971‑90‑6 |
‑ |
10 |
‑ |
‑ |
‑ |
3 |
|
Coal dust (Respirable particulate) This limit expires on July1, 2010 and is replaced by the exposure limit shown below |
|
‑ |
2 |
‑ |
‑ |
‑ |
‑ |
‑ |
Coal dust (Respirable particulate) Anthracite Bituminous These limits come into effect on |
|
‑ |
0.4 0.9 |
‑ |
‑ |
‑ |
‑ |
|
Coal tar pitch volatiles, as benzene solubles |
65996‑93‑2 |
‑ |
0.2 |
‑ |
‑ |
‑ |
‑ |
A1 |
Cobalt, elemental inorganic compounds, as Co |
7440‑48‑4
|
‑
|
0.02
|
‑
|
‑
|
‑
|
‑
|
|
Cobalt carbonyl, as Co |
10210‑68‑1 |
‑ |
0.1 |
|
‑ |
‑ |
‑ |
|
Cobalt hydrocarbonyl, as Co |
16842‑03‑8 |
‑ |
0.1 |
‑ |
‑ |
‑ |
‑ |
|
Copper Fume Dusts/mists, as Cu |
7440‑50‑8
|
‑ ‑ |
0.2 1 |
‑ |
‑ ‑ |
‑ ‑ |
‑ ‑ |
|
Cotton, dust, raw |
|
‑ |
0.2 |
‑ |
‑ |
‑ |
‑ |
|
Coumaphos (mg/m3) |
56‑72‑4 |
|
0.5 |
‑ |
‑ |
‑ |
1 |
|
Cresol, all isomers |
1319‑77‑3 95‑48‑7 108‑39‑4 106‑44‑5 |
5 |
22 |
‑ |
‑ |
‑ |
1 |
|
Cristobalite, respirable (Silica, crystalline) |
14464‑46‑1 |
‑ |
0.025 |
‑ |
‑ |
‑ |
‑ |
A2 |
Crocidolite (Asbestos) |
12001‑28‑4 |
‑ |
‑ |
0.1 |
‑ |
‑ |
‑ |
A1 |
Crotonaldehyde |
4170‑30‑3 |
‑ |
‑ |
‑ |
(c) 0.3 |
(c) 0.9 |
1, 3 |
|
Cruformate |
299‑86‑5 |
‑ |
5 |
‑ |
‑ |
‑ |
‑ |
|
Cumene |
98‑82‑8 |
50 |
246 |
‑ |
‑ |
‑ |
‑ |
|
Cyanamide |
420‑04‑2 |
‑ |
2 |
‑ |
‑ |
‑ |
3 |
|
Cyanide and Cyanide salts and hydrogen cyanide as CN Hydrogen cyanide Calcium cyanide Potassium cyanide Sodium cyanide |
74‑90‑8 592‑01‑8 151‑50‑8 143‑33‑9 |
‑ ‑ ‑ ‑ |
‑ ‑ ‑ ‑ |
‑ ‑ ‑ ‑ |
(c) 4.7 ‑ ‑ ‑ |
(c) 5.2 (c) 5 (c) 5 (c) 5 |
1 1 1 1 |
|
Cyanogen |
460‑19‑5 |
10 |
21 |
‑ |
‑ |
‑ |
3 |
|
Cyanogen chloride |
506‑77‑4 |
‑ |
‑ |
‑ |
(c) 0.3 |
(c) 0.8 |
‑ |
|
Cyclohexane |
110‑82‑7 |
100 |
344 |
‑ |
‑ |
‑ |
‑ |
|
Cyclohexanol |
108‑93‑0 |
50 |
205 |
‑ |
‑ |
‑ |
1 |
|
Cyclohexanone |
108‑94‑1 |
20 |
80 |
‑ |
50 |
200 |
1 |
|
Cyclohexene |
110‑83‑8 |
300 |
1010 |
‑ |
‑ |
‑ |
3 |
|
Cyclohexylamine |
108‑91‑8 |
10 |
41 |
‑ |
‑ |
‑ |
3 |
|
Cyclonite (RDX) |
121‑82‑4 |
‑ |
0.5 |
‑ |
‑ |
‑ |
1 |
|
Cyclopentadiene |
542‑92‑7 |
75 |
203 |
‑ |
‑ |
‑ |
3 |
|
Cyclopentane |
287‑92‑3 |
600 |
1720 |
‑ |
‑ |
‑ |
‑ |
|
Cyhexatin (Tricyclohexyltin hydroxide) |
13121‑70‑5 |
‑ |
5 |
‑ |
‑ |
‑ |
‑ |
|
2,4‑D (2,4‑Dichlorophenoxyacetic acid) |
94‑75‑7 |
‑ |
10 |
‑ |
‑ |
‑ |
3 |
|
DDT (Dichlorodiphenyl trichloroethane) |
50‑29‑3 |
‑ |
1 |
‑ |
‑ |
‑ |
‑ |
|
Decaborane |
17702‑41‑9 |
0.05 |
0.3 |
‑ |
0.15 |
0.8 |
1 |
|
Demeton (Systox®) |
8065‑48‑3 |
‑ |
0.05 |
‑ |
‑ |
‑ |
1 |
|
Demeton‑s‑methyl (Methyl demeton) |
8022‑00‑2 |
‑ |
0.05 |
‑ |
‑ |
‑ |
1 |
|
Diacetone alcohol (4‑Hydroxyl‑4‑methyl‑2‑pentanone) |
123‑42‑2 |
50 |
238 |
‑ |
‑ |
‑ |
3 |
|
4,4‑Diaminodiphenyl‑methane (4,4’‑Methylene dianiline) |
101‑77‑9 |
0.1 |
0.8 |
‑ |
‑ |
‑ |
1 |
|
1,2‑Diaminoethane (Ethylenediamine) |
107‑15‑3 |
10 |
25 |
‑ |
‑ |
‑ |
1 |
|
Diazinon |
333‑41‑5 |
‑ |
0.01 |
‑ |
‑ |
‑ |
1 |
|
Diazomethane |
334‑88‑3 |
0.2 |
0.3 |
‑ |
‑ |
‑ |
‑ |
A2 |
Dibenzoyl peroxide (Benzoyl peroxide) |
94‑36‑0 |
‑ |
5 |
‑ |
‑ |
‑ |
3 |
|
Diborane |
19287‑45‑7 |
0.1 |
0.1 |
‑ |
‑ |
‑ |
‑ |
|
Dibrom (Naled) |
300‑76‑5 |
‑ |
0.1 |
‑ |
‑ |
‑ |
1 |
|
2‑N‑Dibutylaminoethanol |
102‑81‑8 |
0.5 |
3.5 |
‑ |
‑ |
‑ |
1,3 |
|
2,6‑Di‑tert‑butyl‑p‑cresol (Butylated hydroxytoluene, BHT) |
128‑37‑0 |
‑ |
10 |
‑ |
‑ |
‑ |
3 |
|
Dibutyl phenyl phosphate |
2528‑36‑1 |
0.3 |
3.5 |
‑ |
‑ |
‑ |
1 |
|
Dibutyl phosphate |
107‑66‑4 |
1 |
8.6 |
‑ |
2 |
17 |
‑ |
|
Dibutyl phthalate |
84‑74‑2 |
‑ |
5 |
‑ |
‑ |
‑ |
‑ |
|
Dichloroacetic acid |
79‑43‑6 |
0.5 |
2.6 |
‑ |
‑ |
‑ |
1 |
|
Dichloroacetylene |
7572‑29‑4 |
‑ |
‑ |
‑ |
(c) 0.1 |
(c) 0.4 |
‑ |
|
o‑Dichlorobenzene (1,2‑Dichlorobenzene) |
95‑50‑1 |
25 |
150 |
‑ |
50 |
300 |
‑ |
|
p‑Dichlorobenzene (1,4‑Dichlorobenzene) |
106‑46‑7 |
10 |
60 |
‑ |
‑ |
‑ |
‑ |
|
1,4‑Dichloro‑2‑butene |
764‑41‑0 |
0.005 |
0.03 |
‑ |
‑ |
‑ |
1 |
A2 |
Dichlorodifluoromethane |
75‑71‑8 |
1000 |
4950 |
‑ |
‑ |
‑ |
‑ |
|
1,3‑Dichloro‑5,5‑dimethyl hydantoin |
118‑52‑5 |
‑ |
0.2 |
‑ |
‑ |
0.4 |
3 |
|
Dichlorodiphenyl‑trichloroethane (DDT) |
50‑29‑3 |
‑ |
1 |
‑ |
‑ |
‑ |
‑ |
|
1,1‑Dichloroethane (Ethylidene chloride) |
75‑34‑3 |
100 |
405 |
‑ |
‑ |
‑ |
‑ |
|
1,2‑Dichloroethane (Ethylene dichloride) |
107‑06‑2 |
10 |
40 |
‑ |
‑ |
‑ |
‑ |
|
1,1‑Dichloroethylene (Vinylidene chloride) |
75‑35‑4 |
5 |
20 |
‑ |
‑ |
‑ |
‑ |
|
1,2‑Dichloroethylene, all isomers (Acetylene dichloride) |
540‑59‑0 156‑59‑2 156‑60‑5 |
200 |
793 |
‑ |
‑ |
‑ |
‑ |
|
Dichloroethyl ether (2,2’‑Dichlorodiethyl ether) |
111‑44‑4 |
5 |
29 |
‑ |
10 |
58 |
1 |
|
Dichlorofluoromethane (Dichloromonofluoromethane) |
75‑43‑4 |
10 |
42 |
‑ |
‑ |
‑ |
‑ |
|
Dichloromethane (Methylene chloride) |
75‑09‑4 |
50 |
174 |
‑ |
‑ |
‑ |
‑ |
|
1,1‑Dichloro‑1‑nitroethane |
594‑72‑9 |
2 |
12 |
‑ |
‑ |
‑ |
3 |
|
2,4‑Diclorophenoxyacetic acid (2,4‑D) |
94‑75‑7 |
‑ |
10 |
‑ |
‑ |
‑ |
3 |
|
1,2‑Dichloropropane (Propylene dichloride) |
78‑87‑5 |
10 |
46 |
‑ |
‑ |
‑ |
‑ |
|
1,1‑Dichloro‑1‑nitroethane |
594‑72‑9 |
2 |
12 |
‑ |
‑ |
‑ |
‑ |
|
1,3‑Dichloropropene |
542‑75‑6 |
1 |
4.5 |
‑ |
‑ |
‑ |
1 |
|
2,2‑Dichloropropionic acid |
75‑99‑0 |
‑ |
5 |
‑ |
‑ |
‑ |
3 |
|
Dichlorotetrafluoroethane (1,2‑Dichloro‑1,1,2, 2‑tetrafluoroethane) |
76‑14‑2 |
1000 |
7000 |
‑ |
‑ |
‑ |
‑ |
|
Dichlorvos |
62‑73‑7 |
‑ |
0.1 |
‑ |
‑ |
‑ |
1 |
|
Dicrotophos |
141‑66‑2 |
‑ |
0.05 |
‑ |
‑ |
‑ |
1 |
|
Dicyclopentadiene |
77‑73‑6 |
5 |
27 |
‑ |
‑ |
‑ |
3 |
|
Dicyclopentadienyl iron (Ferrocene) |
102‑54‑5 |
‑ |
10 |
‑ |
‑ |
‑ |
‑ |
|