Below is a list of known human carcinogens according to The National Institute for Occupational Safety and Health (NIOSH).

A

Acetaldehyde

2-Acetylaminofluorene

Acrylamide

Acrylonitrile

Aldrin

4-Aminodiphenyl

Amitrole

Aniline and homologs

o-Anisidine

Arsenic and inorganic arsenic compounds

Arsine

Asbestos

Asphalt fumes

B

Benzene

Benzidine

Benzidine-based dyes

Beryllium

Butadiene

tert-Butyl chromate; class, chromium hexavalent

C

Cadmium dust and fume

Captafol

Captan

Carbon black (exceeding 0.1% PAHs)

Carbon tetrachloride

Chlordane

Chlorinated camphene

Chlorodiphenyl (42% chlorine); class polychlorinated biphenyls

Chlorodiphenyl (54% chlorine); class polychlorinated biphenyls

Chloroform

Chloromethyl methyl ether

bis(Chloromethyl) ether

B-Chloroprene

Chromium, hexavalent

Chromyl chloride; class, chromium hexavalent

Chrysene

Coal tar pitch volatiles; class, coal tar products

Coke oven emissions

D

DDT (dichlorodiphenyltrichloroethane)

Di-2-ethylhexyl phthalate (DEHP)

2,4-Diaminoanisoleo

o-Dianisidine-based dyes

1,2-Dibromo-3-chloropropane (DBCP)

Dichloroacetylene

p-Dichlorobenzene

3,3′-Dichlorobenzidine

Dichloroethyl ether

1,3-Dichloropropene

Dieldrin

Diesel exhaust

Diglycidyl ether (DGE); class, glycidyl ethers

4-Dimethylaminoazobenzene

Dimethyl carbomoyl chloride

1,1-Dimethylhydrazine; class, hydrazines

Dimethyl sulfate

Dinitrotoluene

Dioxane

E-G

Environmental tobacco smoke

Epichlorohydrin

Ethyl acrylate

Ethylene dibromide

Ehtylene dichloride

Ethylene oxide

Ethyleneimine

Ethylene thiourea

Formaldehyde

Gallium arsenide

Gasoline

H-K

Heptachlor

Hexachlorobutadiene

Hexachloroethane

Hexamethyl phosphoric triamide (HMPA)

Hydrazine

Kepone

M

Malonaldehyde

Methoxychlor

Methyl bromide; class, monohalomethanes

Methyl chloride

Methyl iodide; class, monohalomethanes

Methyl hydrazine; class, hydrazines

4,4′-Methylenebis(2-chloroaniline) (MBOCA)

Methylene chloride

4,4-Methylenedianiline (MDA)

N

α-Naphthylamine (alpha-naphthylamine)

β-Naphthylamine (beta-naphthylamine)

Nickel, metal, soluble, insoluble, and inorganic; class, nickel, inorganic

Nickel carbonyl

Nickel sulfide roasting

4-Nitrobiphenyl

p-Nitrochlorobenzene

2-Nitronaphthalene

2-Nitropropane

N-Nitrosodimethylamine

P

Pentachloroethane; class, chloroethanes

N-Phenyl-b-naphthylamine; class, b-naphthalene

Phenyl glycidyl ether; class, glycidyl ethers

Phenylhydrazine; class, hydrazines

Propane Sultone

B-Propiolactone

Propylene dichloride

Proplyene imine

Propylene oxide

R-S

Radon

Rosin core solder, pyrolysis products (containing formaldehyde)

Silica, crystalline cristobalite

Silica, crystalline quartz

Silica, crystalline tripoli

Silica, crystalline tridymite

silica, fused

Soapstone, total dust silicates

T

Tremolite silicates

2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) (dioxin)

1,1,2,2-Tetrachloroethane

Tetrachloroethylene

Titanium dioxide

o-Tolidine-based dyes

o-Tolidine

Toluene diisocyanate (TDI)

Toluene diamine (TDA)

o-Toluidine

p-Toluidine

1,1,2-Trichloroethane; class, chloroethanes

Trichloroethylene

1,2,3-Trichloropropane

U-Z

Uranium, insoluble compounds Uranium, soluble compounds

Vinyl bromide; class, vinyl halides

Vinyl chloride

Vinyl cyclohexene dioxide

Vinylidene chloride (1,1-dichloroethylene); class, vinyl halides)

Welding fumes, total particulates

Wood dust

Zinc chromate; class, chromium hexavalent