TABLE XVII. EXAMPLES OF CLASSES OF CARCINOGENS
Class of Substance Examples Class of Substance Examples
alkylating agents a - haloethers: 

bis(chloromethyl) ether

hydrazines hydrazine
methyl chloromethyl ether 1,2-dimethylhydrazine
sulfonates :

1,4-butanediol dimethanesulfonate

1,1-dimethylhydrazine
diethylsulfate  1,2-dimethylhydrazine
dimethyl sulfate N-nitroso compounds N-nitrosodimethylamine
ethyl methanesulfonate N-nitros-N-alkylureas
methyl methanesulfonate aromatic amines 4-aminobiphenyl
methyltrifluoromethanesulfonate benzidine
1,3- propanesulfonate a - naphthylamine
epoxides: 

ethylene oxide

b - naphthylamine
diepoxybutane aniline
epichlorohydrin  o- anisidine
propylene oxide 2,4-diaminotoluene
styrene oxide o- toluidine
aziridines:

ethylenimine

aromatic hydrocarbons benzene
2-methylaziridine benz[a] anthracene
diazo, azo and azoxy compounds:

4-dimethylaminoazobenzene

benzo[a]pyrene
electrophilic alkenes and alkynes: 

acrylonitrile

 acrolein

 ethyl acrylate

natural products aflatoxins 

bleomycin

 cisplatin

 progesterone

reserpine
acylating agents b - propiolactone
b - butyrolactone
dimethylcarbamyl chloride
organohalogen compounds 1,2 -dibromo-3- chloropropane miscellaneous organic compounds formaldehyde
bis(2-chloroethyl)sulfide acetyaldehyde
vinyl chloride 1,4-dioxane
carbon tetrachloride ethyl carbamate
chloroform hexamethylphosphoramide
3-chloro-2-methylpropene 2-nitropropane
1,2- dibromoethane styrene
1,4-dichlorobenzene thiourea
1,2-dichloroethane thioacetamide
2,2-dichloroethane miscellaneous inorganic compounds arsenic and some arsenic compounds
1,3-dichloropropene chromium and some chromium compounds
hexachlorobenzene thorium dioxide
methyl iodide beryllium and some beryllium compounds
tetrachloroethylene cadmium and some cadmium compounds
trichloroethylene lead and some lead compounds
nickel and some nickel compounds
2,4,6-trichlorophenol selenium sulfide