Substances, mixtures and exposure circumstances in this list have been classified by the International Agency for Research on Cancer (IARC) as group 2B: The agent (mixture) is "possibly carcinogenic to humans". The exposure circumstance entails exposures that are possibly carcinogenic to humans. This category is used for agents, mixtures and exposure circumstances for which there is limited evidence of carcinogenicity in humans and less than sufficient evidence of carcinogenicity in experimental animals. It may also be used when there is inadequate evidence of carcinogenicity in humans but there is sufficient evidence of carcinogenicity in experimental animals. In some instances, an agent, mixture or exposure circumstance for which there is inadequate evidence of carcinogenicity in humans but limited evidence of carcinogenicity in experimental animals together with supporting evidence from other relevant data may be placed in this group. Further details can be found in the preamble to the IARC Monographs. Agents and groups of agents A A-α-C (2-Amino-9H-pyrido[2,3-b]indole) Acetaldehyde Acetamide Acrylonitrile AF-2 (2-(2-Furyl)-3-(5-nitro-2-furyl)acrylamide) Aflatoxin M1 1-Amino-2,4-dibromoanthraquinone para-Aminoazobenzene ortho-Aminoazotoluene 2-Amino-5-(5-nitro-2-furyl)-1,3,4-thiadiazole Amsacrine ortho-Anisidine Anthraquinone Antimony trioxide Aramite Auramine Azaserine Aziridine B Benz[j]aceanthrylene Benz[a]anthracene Benzo[b]fluoranthene Benzo[j]fluoranthene Benzo[k]fluoranthene Benzo[c]phenanthrene Benzophenone Benzofuran Benzyl violet 4B 2,2-Bis(bromomethyl)propane-1,3-diol BK polyomavirus (BKV) Bleomycin Bracken fern Bromochloroacetic acid Bromodichloromethane 1-Bromopropane Butylated hydroxyanisole β-Butyrolactone C Caffeic acid Carbazole Carbon black Carbon nanotubes, multi-walled MWCNT-7 Carbon tetrachloride Catechol Chlordane Chlordecone (Kepone) Chlorendic acid para-Chloroaniline 3-Chloro-4-(dichloromethyl)-5-hydroxy-2(5H)-furanone Chloroform 1-Chloro-2-methylpropene 3-Chloro-2-methylpropene, technical grade Chlorophenoxy herbicides 4-Chloro-ortho-phenylenediamine Chloroprene Chlorothalonil Chrysene CI Acid Red 114 CI Basic Red 9 CI Direct Blue 15 Citrus Red No. 2 Cobalt and cobalt compounds Cobalt sulfate and other soluble cobalt(II) salts Coconut oil diethanolamine condensate para-Cresidine Cumene Cycasin D 2,4-D (2,4-dichlorophenoxyacetic acid) Dacarbazine Dantron (Chrysazin, 1,8-Dihydroxyanthraquinone) Daunomycin DDT (p,p'''-DDT) N,N'-Diacetylbenzidine 2,4-Diaminoanisole 4,4'-Diaminodiphenyl ether 2,4-Diaminotoluene Dibenz[a,h]acridine Dibenz[c,h]acridine 7H-Dibenzo[c,g]carbazole Dibenzo[a,e]pyrene Dibenzo[a,h]pyrene Dibenzo[a,i]pyrene Dibromoacetic acid Dibromoacetonitrile 1,2-Dibromo-3-chloropropane 2,3-Dibromopropan-1-ol Dichloroacetic acid para-Dichlorobenzene 3,3'-Dichlorobenzidine 3,3'-Dichloro-4,4'-diaminodiphenyl ether 1,2-Dichloroethane 1,3-Dichloropropene (technical grade) 1,3-Dichloro-2-propanol Dichlorvos Diethanolamine Di(2-ethylhexyl)phthalate 1,2-Diethylhydrazine Diglycidyl resorcinol ether Digoxin Dihydrosafrole Diisopropyl sulfate 3,3'-Dimethoxybenzidine (o-Dianisidine) para-Dimethylaminoazobenzenetrans-2-[(Dimethylamino)methylimino]-5-[2-(5-nitro-2-furyl)-vinyl]-1,3,4-oxadiazole 2,6-Xylidine (2,6-Dimethylaniline) Dimethylarsinic acid 3,3'-Dimethylbenzidine (o-Tolidine) 1,1-Dimethylhydrazine Dimethyl-p-toluidine 3,7-Dinitrofluoranthene 3,9-Dinitrofluoranthene 1,3-Dinitropyrene 1,6-Dinitropyrene 1,8-Dinitropyrene 2,4-Dinitrotoluene 2,6-Dinitrotoluene 1,4-Dioxane Disperse Blue 1 E 1,2-Epoxybutane Ethyl acrylate Ethylbenzene Ethylene dichloride Ethyl methanesulfonate F Foreign bodies, implanted in tissues Polymeric, prepared as thin smooth films (with the exception of poly(glycolic acid)) Metallic, prepared as thin smooth films Metallic cobalt, metallic nickel and an alloy powder containing 66-67% nickel, 13-16% chromium and 7% iron 2-(2-Formylhydrazino)-4-(5-nitro-2-furyl)thiazole Fumonisin B1 Furan GGinkgo biloba extract Glu-P-1 (2-Amino-6-methyldipyrido[1,2-a:3',2'-d]imidazole) Glu-P-2 (2-Aminodipyrido[1,2-a:3',2'-d]imidazole) Glycidaldehyde