APPENDIX K

APPENDIX K

CHEMICAL CARCINOGENS

Table 1: Summary Evaluations of Carcinogenic Risk to Humans from chemicals, Industrial Processes and Industries

Table 2: Chemicals for which there is sufficient Evidence of Carcinogenicity in Experimental Animals

Table 3: Substances or Groups of Substances, and Technological or Manufacturing Processes that are Known to be Carcinogenic

Table 4: Substances or Groups of Substances that may Reasonably be Anticipated to be Carcinogens

Table 5: Carcinogens Regulated by the Occupational Safety and Health Administration

CHEMICAL CARCINOGENS

Table 1. Summary Evaluations of Carcinogenic Risk to Humans from Chemicals, Industrial Processes and Industries (IARC Monographs Vol 1-29).

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Chemical/Process Evidence/ Evidence/ Evidence/ Summary or Industry Human Animal Bioassay

Evaluation

_________________________________________________________________

Acrylonitrile	Limited	Sufficient	Sufficient	2A
Actinomycin D	Inadequate	Limited	Sufficient	2B
Adrimycin	Inadequate	Sufficient	Sufficient	2B
Aflatoxin	Limited	Sufficient	Sufficient	2A
Aldrin	Inadequate	Limited	Inadequate	3
4-Aminobiphenyl	Sufficient	Sufficient	Sufficient	1
Amitrole	Inadequate	Sufficient	Inadequate	2B
Anesthetic gases	Inadequate	Inadequate	Inadequate	3
Analgesic Mixtures
(with Phenacetin)	Sufficient	Limited	No Data	1
(with Phenacetin)	Limited	Sufficient	Limited	2A
Aniline	Inadequate	Limited	Inadequate	3
Arsenic and
arsenic Compounds	Sufficient	Inadequate	Limited	1
Asbestos	Sufficient	Sufficient	Inadequate	1
Auramine (technical
grade)	Limited	Limited	Sufficient	2B
Auramine Production	Sufficient	-	-	1
Azathioprine	Sufficient	Limited	Sufficient	1
Benzene	Sufficient	Limited	Limited	1
Benzidine	Sufficient	Sufficient	Sufficient	1
Benzidine-based dyes
(Direct Black 38)	Inadequate	Sufficient	Inadequate	2B
(Direct Blue 6)	Inadequate	Sufficient	No Data	2B
(Direct Brown 95)	Inadequate	Limited	No Data	2B
Beryllium and certain
beryllium compounds	Limited	Sufficient	Inadequate	2A
N,N-Bis (2-chloroethyl)-
2-naphthylamine	Sufficient	Limited	Limited	1
Bischloroethyl
nitrosourea (BCNU)	Inadequate	Sufficient	Sufficient	2B

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Chemical/Process Evidence/ Evidence/ Evidence/ Summary or Industry Human Animal Bioassay

Evaluation

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N,N-Bis(2-chloroethyl)
2-naphthylamine	Sufficient	Limited	Limited	1
Bischloroethyl
nitrosourea (BCNU)	Inadequate	Sufficient	Sufficient	2B
Bis(chloromethyl)
ether	Sufficient	Sufficient	Adequate	1
Bleomycins	Inadequate	Inadequate	Sufficient	3
1,4-Butanedio dimethane
sulphonate (myleran)	Sufficient	Limited	Sufficient	1
Cadmium and certain
cadmium compounds	Limited	Sufficient	Sufficient	2B
Carbon tetrachloride	Inadequate	Sufficient	Inadequate	2B
Chlorabucil	Sufficient	Sufficient	Sufficient	1
Chloramphenicol	Limited	Inadequate	Inadequate	2B
Chlordane	Inadequate	Limited	Inadequate	3
1-(2-Chloroethyl)-3-cyclo-
hexyl-1 nitrosourea (CCRU)	Inadequate	Sufficient	Sufficient	2B
Chlorinated toluenes
(production of)
Benzyl chloride	Inadequate	Limited	Sufficient	3
Benzoyl chloride	Inadequate	Inadequate	Inadequate	3
Benzotrichloride	Inadequate	Sufficient	Limited	2B
Chloroform	Inadequate	Sufficient	Inadequate	2B
Chlorophenols	Limited	-	-	2B
Chloroprene	Inadequate	Inadequate	Sufficient	3
Chromium and certain
chromium compounds	Sufficient	Sufficient	Sufficient	1
			(Cr VI)
			Inadequate
			(Cr III)
Cisplatin	Inadequate	Limited	Sufficient	2B
Clofibrate	Inadequate	Limited	Inadequate	3
Clomiphene	Inadequate	Inadequate	No Data	3
Cyclamates	Inadequate	Limited	Inadequate	3
Cyclophosphamide	Sufficient	Sufficient	Sufficient	1
2,4-D and esters	Inadequate	Inadequate	Inadequate	3

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Chemical/Process Evidence/ Evidence/ Evidence/ Summary or Industry Human Animal Bioassay

Evaluation

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Dicarbazine	Inadequate	Sufficient	Limited	2B
Dapson	Inadequate	Limited	Inadequate	3
DDT	Inadequate	Sufficient	Inadequate	2B
o-Dichlorobenzene
p-Dichlorobenzene	Inadequate	Inadequate	Inadequate	3
3,3'-Dichlorobenzidine	Inadequate	Sufficient	Sufficient	2B
Dichloromethane	Inadequate	Inadequate	Limited	3
Dieldrin	Inadequate	Limited	Inadequate	3
Diethyl sulphate	Limited	Sufficient	Sufficient	2A
1,4-Dioxane	Inadequate	Sufficient	Inadequate	2B
Epichlorohydrin	Inadequate	Sufficient	Inadequate	2B
Ethylene dibromide	Inadequate	Sufficient	Sufficient	2B
Ethylene oxide	Inadequate	Limited	Sufficient	2B
Ethylene thiourea	Inadequate	Sufficient	Limited	2B
5-Fluorouracil	Inadequate	Inadequate	Limited	3
Formaldehyde	Inadequate	Sufficient	Sufficient	2B
Hexachlorocyclo-
hexane	Inadequate	Limited	Inadequate	3
Hydralazine	Inadequate	Limited	Sufficient	3
Hydrazine	Inadequate	Sufficient	Sufficient	2B
Isonicotinic acid
hydrazide	Inadequate	Limited	Limited	3
Lead and lead
compounds	Inadequate	Sufficient	Inadequate	3
Melphalan	Sufficient	Sufficient	Sufficient	1
6-Mercaptopurine	Inadequate	Inadequate	Sufficient	3
Methotrexate	Inadequate	Inadequate	Sufficient	3
Methronidazole	Inadequate	Sufficient	Limited	2B
Mustard (H)	Sufficient	Limited	Sufficient	1
1-Naphthylamine	Inadequate	Inadequate	Sufficient	3
2-Naphthylanine	Sufficient	Sufficient	Sufficient	1
Nickel and certain
nickel compounds	Limited	Sufficient	Inadequate	2A
Nitrogen mustard	Inadequate	Sufficient	Sufficient	2A
Oestrogens
Dienoestrol	Limited	Inadequate	Inadequate	2B
DES	Sufficient	Sufficient	Inadequate	1
Ethinyloestradiol	Inadequate	Sufficient	Inadequate	2B
Mestranol	Inadequate	Sufficient	Inadequate	2B

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Chemical/Process Evidence/ Evidence/ Evidence/ Summary or Industry Human Animal Bioassay

Evaluation

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Oestradiol-17 Beta	Inadequate	Sufficient	Inadequate	2B
Oestrone	Inadequate	Sufficient	Inadequate	2B
Progestins
Chlormadinone acetate	Inadequate	Limited	Inadequate	3
Dimethisterone	Inadequate	Inadequate	Inadequate	3
Ethynodiol diacetate	Inadequate	Limited	Inadequate	3
Lyncestrenol	Inadequate	Inadequate	Inadequate	3
Medroxyprogesterone acetate	Inadequate	Limited	Inadequate	3
Megestrol acetate	Inadequate	Limited	Inadequate	3
Norethisterone	Inadequate	Sufficient	Inadequate	2B
Norethymodrel	Inadequate	Limited	Inadequate	3
Norgestrel	Inadequate	Inadequate	No Data	3
Progesterone	Inadequate	Sufficient	Inadequate	2B
Oxymetholone	Limited	No Data	No Data	2A
Pentachlorophenol	Inadequate	Inadequate	Inadequate	3
Phenazopyridine	Inadequate	Sufficient	No Data	2B
Phenelzine	Inadequate	Limited	Inadequate	3
Phenobarbital	Inadequate	Limited	Inadequate	3
Phenylbutazone	Inadequate	No Data	Inadequate	3
N-Phenyl-2-naphthylamine	Inadequate	Inadequate	Inadequate	3
Phenyton	Limited	Limited	Inadequate	2B
Polychlorimated biphenyls	Inadequate	Sufficient	Inadequate	2B
Prednisone	Inadequate	Inadequate	Inadequate	3
Procarbizine	Inadequate	Sufficient	Sufficient	2A
Propylthiouracil	Inadequate	Sufficient	No Data	2B
Reserpine	Inadequate	Limited	Inadequate	3
Saccharin	Inadequate	Limited	Inadequate	3
Soots, tars and oils	Sufficient	Sufficient	-	1
Benzo(a)pyrene	Inadequate	Sufficient	Sufficient	2A
Spironolactone	Inadequate	Limited	No Data	3
Styrene	Inadequate	Limited	Sufficient	3
Styrene oxide	Inadequate	Limited	Sufficient	3
Sulfafurazole	Inadequate	Inadequate	Inadequate	3
Sulfamethoxazole	Inadequate	Limited	Inadequate	3
2,4,5-T and esters	Inadequate	Inadequate	Inadequate	3

_________________________________________________________________ Chemical/Process Evidence/ Evidence/ Evidence/ Summary or Industry Human Animal Bioassay

Evaluation

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2,4,5-Trichlorophenol	Inadequate	Inadequate	No Data	3
2,4,6-Trichlorophenol	Inadequate	Sufficient	No Data	2B
Tris(azinidinyl)-para-
benzoquone (Triaziquone)	Inadequate	Limited	Sufficient	2B
Tris(1-aziridinyl)phosphine-
sulphide (Thiotepa)	Inadequate	Sufficient	Sufficient	2B
Uracil mustard	Inadequate	Sufficient	Sufficient	2B
Vinblastine	Inadequate	Inadequate	Inadequate	3
Vincristine	Inadequate	Inadequate	Inadequate	3
Vinyl chloride	Sufficient	Sufficient	Sufficient	1
Vinylidene chloride	Inadequate	Limited	Sufficient	3

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Notes on the summary evaluations:

Category 1. There is sufficient evidence to establish a causal

relationship between the chemical and human cancer.

Category 2. This category is divided into groups 2A and 2B. The

chemical is probably carcinogenic to humans.

Category 2A. Reserved for chemicals for which there was

at least limited evidence of carcinogenicity

to humans.

Category 2B. Refers to the combination of sufficient

evidence for animals, and inadequate

evidence for humans.

Category 3. Chemicals which cannot be classified because the evidence for animals and humans is inadequate to make an evaluation.

Table 2. chemicals for which there is Sufficient Evidence of Carcinogenicity in Experimental Animals (IARC Supplement4).

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ortho-Aminoazotoluene

2-Amino-5-(5-nitro-2-furyl)-1,3,4-thiadiazole

ortho-Anisidine

Aramite

Azaserine

Benzotrichloride

Benzyl violet 4B

Beryllium metal

Beryllium oxide

Beryllium sulphate

beta-Butyrolactone

Cadmium chloride

Cadmium oxide

Cadmium sulphate

Cadmium sulphide

Calcium chromate

Chlordecone (Kepone)

4Chloro-ortho-phenylendediamine

Citrus Red No. 2

para-Cresidine

Cyasin

Daunomycin

N,N'-Diacetylbenzidine

2,4-Diaminoanisole sulphate

4,4'-Diaminodiphenyl ether

2,4-Diaminotoluene

1,2-Dibromo-3-chloropropane

3,3'-Dichlaro-4,4' diaminodiphenyl ether

1,2-Dichloroethane

Diepoxybutane

Di(2-ethylhexyl)phthalate (DOP)

1,2-Diethylhydrazine

Dihydrosafrole

para-Dimethylaminoazobenzene

trans-2[(Dimethylamino)methylimino]-5[2-(5-nitro-2-furyl)vinyl]-1,3,4-oxadiazole

3,3'-Dimethlbenzidine (ortho-Tolidine)

1,1-Dimethylhydrazine

1,2-Dimethylhydrazine

Direct Black 38 (technical grade)

Direct Blue 6 (technical grade)

Ethyl methanesulphonate

2-(2-Formylhydrazino)-4-(5-nitro-2-furyl)thiazole

Glycidaldehyde

Hexachlorobenzene

Hexamethylphosphoramide

Isosafrole

Lasiocarpine

Lead acetate

Lead chromate

Lead phosphate

Lead subacetate

Merphalan

2-Methylaziridine

Methylazoxymethanol

4,4'-Methylene bis(2-chloroaniline)

4,4'-Methylene bis(2-methylaniline)

Methyl iodide

Methyl methanesulphonate

2-Methyl-1-nitroanthraquinone

N-Methyl-N'-nitro-N-nitrosoquanidine

methylthiouracil

Mirex

Mytomicin C

Monocrotaline

5-(Morpholinomethyl)-3[5-nitrofurfurylidene) amino]-2-oxazolidinone

Nafenopin

Nickel subsulphide

Niridazole

5-Nitroacenaphthene

1-[(5-Nitrofurfurylidine)amino]-2-imidiazolidinone

N-[4-(5-Nitro-2-furyl)-2-hiazolyl]acetamide

Nitrogen mustard N-oxide

2-Nitropropane

N-Nitrosodi-n-butylamine

N-Nitrosodiethanolamine

N-Nitrosodiethylamine

N-Nitrosodimethylamine

N-Nitrosodi-n-propylamine

N-Nitroso-N-ethylurea

N-Nitrosomethylethylamine

N-Nitroso-N-methylurea

N-Nitroso-N-methylurethane

N-Nitrosomethylvinylamine

N-Nitrosomorpholine

N'-Nitrosonornicotine

N-Nitrosopiperidine

N-Nitrosopyrrolidine

N-Nitrososarcosine

Oil orange SS

Panfuran S

Phenoxybenzamine

Ponceau MX

Ponceau 3R

1,3-Propane sulton

B-Propiolacetone

Safrole

Sintered calcium chromate

Sintered chromium trioxide

Sodium saccharin

Sterigmatocystin

Streptozotocin

Strontium chromate

Testosterone

Thioacetamide

4,4'-Thiodianiline

Toxaphene

Tris(2,3-dibromopropyl)phosphate

Trypan blue (commercial grade)

Urethane

Zinc beryllium silicate

Zinc chromate

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Note: Chemicals listed in this table are classified as Category 2B. Specific beryllium, cadmium, chromium, and lead compounds listed in this table take precedence over the classification in Table 1.

Table 3. substances or Groups of Substances, and Technological or Manufacturing Processes that are Known to be Carcinogenic (NTP Fifth Annual Report on Carcinogens.

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Chemical/Process Evidence in Evidence in Industry Human Animal

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4-Aminobiphenyl	Sufficient	Sufficient
Analgesic Mixtures
containing Phenacetin	Sufficient	Limited
Arsenic and certain
arsenic compounds	Sufficient	Inadequate
Asbestos	Sufficient	Sufficient
Azathioprine	Sufficient	Limited
Benzene	Sufficient	Sufficient
Benzidine	Sufficient	Sufficient
Bis(chloromethyl)ether
and technical grade
chloromethyl methyl ether	Sufficient	Sufficient
1,4-Butianediol dimethyl
sulfonate (Myleran)	Sufficient	Limited
Chlorambucil	Sufficient	Sufficient
Chromium and certain
chromium compounds	Sufficient	Sufficient
Conjugated Estrogens	Sufficient	Inadequate
Cyclophosphamide	Sufficient	Sufficient
Diethylstilbestrol	Sufficient	Sufficient
Melphalan	Sufficient	Sufficient
Mustard gas	Sufficient	Limited
2-Naphthylamine	Sufficient	Sufficient
Nickel refining	Sufficient	Sufficient
Rubber industry	Sufficient	-
Soots, tars, and mineral oils	Sufficient	Sufficient
Thorium dioxide	Sufficient	-
Vinyl chloride	Sufficient	Sufficient

___________________

Note: These chemicals are equivalent to the Category I classification used by IARC. A dash (-) indicates no data was available for review.

Table 4. Substances or Groups Of Substances that may Reasonably be

Anticipated to be Carcinogens (NTP Fifth Annual Report on Carcinogens).

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Chemical/Process Evidence in Evidence in Industry Human Animal

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2-Acetylaminofluorene	Inadequate	Sufficient
Acrylonitrile	Limited	Sufficient
Adriamycin	Inadequate	Sufficient
Aflatoxins	Limited	Sufficient
2-Aminoanthraquinone	*	Sufficient
o-Aminoazotoluene	*	Sufficient
1-Amino-2-methylanthra-quinone	*	Sufficient
Amitrole	Inadequate	Sufficient
o-Anisidine and
o-anisidine hydrochloride	*	Sufficient
Benz(a)anthracene	*	Sufficient
Benzo(b)fluoranthene	*	Sufficient
Benzo(j)fluoranthene	*	Sufficient
Benzo(k)fluoranthene	*	Sufficient
Benzo(a)pyrene	*	Sufficient
Benzotrichloride	Inadequate	Sufficient
Beryllium and certain
beryllium compounds	Limited	Sufficient
Bischloroethyl nitrosourea	Inadequate	Sufficient
1,3-Butadiene	Inadequate	Sufficient
Cadmium and certain
cadmium compounds	Limited	Sufficient
Carbon tetrachloride	Inadequate	Sufficient
Chlorendic acid	*	Sufficient
Chlorinated Paraffins
(C12, 60% Chlorine)	*	Sufficient
1(2-Chloroethyl)-3-
Cyclohexyl-1-nitrosourea . (CCNU)	Inadequate	Sufficient
Chlorform	Inadequate	Sufficient
3-Chloro-2-methylpropene	*	Sufficient
4-Chloroophenylenediamine	*	Sufficient
C.I. Basic Red 9
Monohydrochloride	Adequate (Magenta)	Sufficient
Para-cresidine	*	Sufficient
Cupferron	*	Sufficient

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Chemical/Process Evidence in Evidence in Industry Human Animal

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Dacarbazine	Inadequate	Sufficient
DDT	Inadequate	Sufficient
2,4-Diaminoanisole sulfate	*	Sufficient
2,4-Diaminotoluene	*	Sufficient
Dibenz(a,h)acridine	*	Sufficient
Dibenz(a,j)acridine	*	Sufficient
Dibenz(a,h)anthracene	*	Sufficient
7H-Dibenzo(c,g)carbazole	*	Sufficient
Dibenzo(a,e)pyrene	*	Sufficient
Dibenzo(a,h)pyrene	*	Sufficient
Dibenzo(a,i)pyrene	*	Sufficient
Dibenzo(a,l)pyrene	*	Sufficient
1,2-Dibromo3chloropropane	*	Sufficient
1,2-Dibromoethane (EDB)	Inadequate	Sufficient
1,4-Dichlorobenzene	Inadequate	Sufficient
3,3'-Dichlorobenzidine	Inadequate	Sufficient
1,2-Dichloroethane	*	Sufficient
Dichloromethane
(Methylene Chloride)	Inadequate	Sufficient
Diepoxybutane	*	Sufficient
Di(2-ethylhexyl)phthalate (DOP)	*	Sufficient
Diethyl sulfate	Llmited	Sufficient
Diglycidyl Resorcinol Ether	*	Sufficient
3,3'-Dimethoxybenzidine	Inadequate	Sufficient
4-Dimethylaminoazobenzene	*	Sufficient
3,3'-Dimethylbenzidine	*	Sufficient
Dimethylcarbamoyl chloride	Inadequate	Sufficient
1,1-Dimethylhydrazine	*	Sufficient
Dimethyl sulfate	Inadequate	Sufficient
Dimethylvinyl chloride	*	Sufficient
1,4-Dioxane	Inadequate	Sufficient
Direct Black 38	Inadequate	Sufficient
Direct Blue 6	Inadequate	Sufficient
Epichlorohydrin	Inadequate	Sufficient
Estrogens (not conjugated)
Estradiol-17 beta	Inadequate	Sufficient
Estrone	Inadequate	Sufficient
Ethinylestradiol	Inadequate	Sufficient
Mestranol	*	Sufficient
Ethyl acrylate	*	Sufficient
Ethylene oxide	Inadequate	Sufficient
Ethylene thiourea	Inadequate	Sufficient

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Chemical/Process Evidence in Evidence in Industry Human Animal

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Formaldehyde (gas)	Inadequate	Sufficient
Hexachlorobenzene	*	Sufficient
Hexamethylphosphoramide	*	Sufficient
Hydrazine and hydrazine
sulfate	Inadequate	Sufficient
Hydrazobenzene	*	Sufficient
Indeno(1,2,3cd)pyrene	*	Sufficient
Iron dextran complex	Inadequate	Sufficient
Kepone	*	Sufficient
Lead acetate and
lead phosphate	Inadequate	Sufficient
Lindane and other hexachloro
cyclohexane isomers	Inadequate	Sufficient
2Methylaziridine	*	Sufficient
4,4'Methylenebis(2chloroanile) (MBOCA)	*	Sufficient
4, 4'Methylenebis (N, N
dimethyl)benzenamine	*	Sufficient
4,4'Methylenedianiline and its
dihydrochloride	*	Sufficient
Metronidazole	Inadequate	Sufficient
Michler's ketone	*	Sufficient
Mirex	*	Sufficient
Nickel and certain
nickel compounds	Inadequate	Sufficient
Nitrilotriacetic acid	*	Sufficient
5Nitrooanisidine	*	Sufficient
Nitrofen	*	Sufficient
Nitrogen mustard	Inadequate	Sufficient
2Nitropropane	*	Sufficient
Nnitrosodinbutylamine	*	Sufficient
Nnitrosodiethanolamine	*	Sufficient
Nnitrosodiethylamine	*	Sufficient
NNitrosodimethylamine	*	Sufficient
pNitrosodiphenylamine	*	Sufficient
Nnitrosodinpropylamine	*	Sufficient
NnitrosoNethylurea	*	Sufficient
NnitrosoNmethylurea	*	Sufficient
NNitrosomethylvinylamine	*	Sufficient
Nnitrosomorpholine	*	Sufficient
Nnitrosonornicotine	*	Sufficient

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Chemical/Process Evidence in Evidence in Industry Human Animal

_________________________________________________________________

N-Nitrosopiperldine	*	Sufficient
N-Nitrosopyrrolidine	*	Sufficient
N-Nitrososarcosine	*	Sufficient
Norethisterone	Inadequate	Sufficient
4,4'-Oxydianiline	*	Sufficient
Oxymetholone	Limited	Sufficient
Phenacetin	Limited	Sufficient
Phenazopyridine
hydrochloride	Inadequate	Sufficient
Phenoyxbonzamine
hydrochloride	*	Sufficient
Phenytoin and sodium
salt of phenytoin	Limited	Limited
Polybrominated biphenyls	*	Sufficient
Polychlorinated biphenyls	Inadequate	Sufficient
Procarbazine, and procar-
bazine hydrochloride	Inadequate	Sufficient
Progesterone	Inadequate	Sufficient
1,3-Propane sultone	*	Sufficient
betaProplolactone	*	Sufficient
Propylene oxide	Inadequate	Sufficient
Propylthiouracil	Inadequate	Sufficient
ReserpIne	Inadequate	Sufficient
Saccharin	Inadequate	Sufficient
Safrole	*	Sufficient
Selenium sulfide	*	Sufficient
Streptozotocin	*	Sufficient
Sulfallate	*	Sufficient
2,3,7,8-Tetrachlorodibenzo-
p-dioxin (TCDD)	Inadequate	Sufficient
Tetrachloroethylene	Inadequate	Sufficient
Thloacetamide	*	Sufficient
Thiourea	*	Sufficient
Toluene diisocyanate	*	Sufficient
o-Toluidine and o-toluidine
hydrochloride	Inadequate	Sufficient
Toxaphene	*	Sufficient
2,4,6-Trichlorophenol	Inadequate	Sufficient
Tris(1-aziridinyl)phosphine
sulfide	Inadequate	Sufficient

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Chemical/Process Evidence in Evidence in Industry Human Animal

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Tris(2,3-dibromopropyl) phosphate * Sufficient

Urethane

Notes: An asterick (*) indicates no data was available for review chemicals

listed with Limited evidence in humans and sufficient evidence in animals

would be equivalent to Category 2A classification used by IARC. Those

with inadequate evidence/no data in humans and sufficient evidence in

animals would be equivalent to Category 2B (See summary evaluation notes

from Table 1).

Table 5. Carcinogens Regulated by the Occupational Safety and Health Administration (29 CFR Part 1910).

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Chemical Standard PEL(TWA)

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Asbestos	1910.1001	0.2
fibers/cc
Benzene	1910.1028	1 ppm
		5 ppm
(STEL)
4-Nitrophenyl	1910.1003	*
1-Naphthylamine	1910.1004	*
Methyl Chloromethyl ether	1910.1006	*
3,3'-Dichlorobenzidine
(and its salts)	1910.1007	*
bis-Chloromethyl ether	1910.1008	*
2-Naphthylamine	1910.1009	*
Benzidine	1910.1010	*
4-Aminodiphenyl	1910.1011	*
Ethyleneimine	1910.1012	*
Beta-Propiolactone	1910.1013	*
2-Acetylaminofluorene	1910.1014	*
4-Dinethylaminoazobenzene	1910.1015	*
N-Nitrosodimethylamine	1910.1016	*
Vinyl chloride	1910.1017	1 ppm
inorganic Arsenic	1910.1018	10 ug/m3
Coke oven emissions	1910.1029	150 ug/m3
1,2-Dibromo-3-chloro-
propane	1910.1044	1 ppb
Acrylonitrile	1910.1045	2 ppm
Ethylene oxide	1910.1047	1 ppm
Formaldehyde	1910.1048	2 ppm
(STEL)

Note: (*) indicates that no PEL has been promulgated by OSHA. Exposure shall not be permitted by any route.