air toxics

Air toxic

Environmental Protection Agency's

Class A Carcinogens


The EPA considers Class A carcinogens as pollutants with adequate human data indicating the chemical causes cancer in people. Class B1 carcinogens have some human data and sufficient animal data to indicate its potential to cause cancer. Class B2 carcinogens have limited to no human data, but sufficient animal data to indicate its potential to cause cancer.

The following pollutants in the 1999 Alaska Air Toxics Emission Inventory are ranked as Class A Carcinogens by EPA:

Chemical Name
Inhalation Unit Risk Estimate (µg/m 3 ) -1
Comments
0.23
Units are in (fibers/cm 3 ) -1
Chromium VI Particulates
0.012
n/a
Bis(chloromethyl)Ether
0.062
n/a
Benzidine
0.067
n/a
Arsenic Compounds (inorganic including arsine)
0.0043
n/a
Coke Oven Emissions
0.00062
n/a
Vinyl Chloride
0.0000088
n/a
Benzene (including benzene from gasoline)
0.0000022 to 0.000078
n/a
4-Aminobiphenyl
N/A
Carcinogenicity ranked "1" by International Agency for Research on Cancer.
Chloromethyl Methyl Ether
N/A
Ranking as Class 'A' carcinogen given by EPA. However, no unit risk estimate is available.

The following pollutants in the 1999 Alaska Air Toxics Emission Inventory are ranked as Class B1 carcinogens by the EPA. Class B1 carcinogens have some human data and sufficient animal data to indicate its potential to cause cancer.

  • Acrylonitrile
  • Beryllium Compounds
  • Cadmium Compounds
  • Diethyl sulfate
  • Ethylene oxide
  • Formaldehyde
  • Styrene oxide
  • Tetrachloroethylene (Perchloroethylene)
  • Trichloroethylene

The following pollutants in the 1999 Alaska Air Toxics Emission Inventory are ranked as Class B2 carcinogens by the EPA. Class B2 carcinogens have limited to no human data, but sufficient animal data to indicate its potential to cause cancer.

  • 1,1-Dimethyl Hydrazine
  • 1,2-Dibromo-3-Chloropropane
  • 1,2-Diphenylhydrazine
  • 1,2-Epoxybutane
  • 1,2-Propyleneimine (2-Methyl Aziridine)
  • 1,3-Butadiene
  • 1,3-Dichloropropene
  • 1,3-Propane Sultone
  • 1,4-Dioxane (1,4-Diethyleneoxide)
  • 2,3,7,8-Tetrachlorodibenzo-p-Dioxin
  • 2,4,6-Trichlorophenol
  • 2,4-Dinitrotoluene
  • 2,4-Toluene Diisocyanate
  • 2,4-Toluene Diamine
  • 2-Nitropropane
  • 3,3-Dichlorobenzidene
  • 3,3-Dimethoxybenzidine
  • 3,3-Dimethyl Benzidine
  • 4,4-Methylene bis (2-Chloroaniline)
  • 4,4'-Methylenedianiline
  • Acetaldehyde
  • Acetamide
  • Acrylamide
  • Aniline
  • Benzotricholoride
  • Benzyl Chloride
  • beta-Propiolactone
  • Bis(2-Ethylhexyl)Phthalate (DEHP)
  • Bromoform
  • Captan
  • Carbon Tetrachloride
  • Catechol
  • Chlordane
  • Chlorobenzilate
  • Chloroform
  • DDE
  • Dichloroethyl Ether (Bis[2-Chloroethyl]ether)
  • Dichlorvos
  • Dimethyl Aminoazobenzene
  • Dimethyl Sulfate
  • Epichlorohydrin (1-Chloro-2,3-Epoxypropane)
  • Ethyl Acrylate
  • Ethyl Carbamate (Urethane)
  • Ethylene Dibromide (Dibromoethane)
  • Ethylene Dichloride (1,2-Dichloroethane)
  • Ethylene Thiourea
  • Heptachlor
  • Hexachlorobenzene
  • Hexamethylphosphoramide
  • Hydrazine
  • Lead Compounds
  • Methylene Chloride(Dichloromethane)
  • Glass wool
  • Rockwool and Slagwool
  • Ceramic Fibers
  • N-Nitrosodimethylamine
  • N-Nitrosomorpholine
  • N-Nitroso-N-Methylurea
  • o-Anisidine
  • o-Toluidine
  • Pentachlorophenol
  • Polychlorinated Biphenyls (Aroclors)
  • Polycylic Organic Matter
  • Propylene Dichloride (1,2-Dichloropropane)
  • Propylene Oxide
  • Quinoline
  • Selenium Sulfide
  • Toxaphene (chlorinated camphene)
  • Vinyl Bromide
  • Lindane (all isomers)

To explore the possible health effects of these and other pollutants, please visit the following internet sites: