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Known and Suspected Carcinogens 
The following chemicals are known or suspected carcinogens. This list 
has been compiled from a number of sources, but it is not (and cannot 
be) comprehensive. 
Therefore, the absence of a chemical from this list does not mean that 
it cannot have carcinogenic properties. Neither does the presence of a 
chemical in the list indicate that it is a proven carcinogen.  
  Source : The Physical and Theoretical Chemistry Laboratory, Oxford University. 
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B         C          D         E          F          G          H       
I          J          K          L       
M          N          O          P          Q          R          S       
T          U          V         W         X       
Y          Z            
 
  
A
  
A-alpha-C (2-Amino-9H-pyrido[2,3-b]indole) 
Acetaldehyde 
Acetamide 
Acetochlor 
2-Acetylaminofluorene 
Acifluorfen 
Acrolein  
Acrylamide  
Acrylonitrile  
Actinomycin D  
Adriamycin (Doxorubicin hydrochloride)  
AF-2;[2-(2-furyl)-3-(5-nitro-2-furyl)]acrylamide  
Aflatoxins  
Agaritine  
Alachlor  
Aldrin  
Allyl chloride  
Aallyl isothiocyanae  
Allyl isovalerate  
Aluminium products  
2-Aminoanthraquinone  
p-Aminoazobenzene  
o-Aminoazotoluene [solvent yellow 3]  
4-Aminobiphenyl (4-aminodiphenyl)  
3-Amino-9-ethylcarbazole hydrochloride  
1-Amino-2-methylanthraquinone  
2-Amino-5-(5-nitro-2-furyl)-1,3,4-thiadiazole amino-5-nitrothiazole, 2- 
Amitrole  
Analgesic mixtures containing phenacetin  
Androgenic (anabolic) steroids  
Aniline  
ortho-Anisidine 
ortho-Anisidine hydrochloride  
para-anisidine anthanthrene  
Antimony oxide (antimony trioxide)  
Aramite  
Arsenic (inorganic arsenic compounds)  
Asbestos  
Auramine  
Azaserine  
Azathioprine  
Azacitidine  
Azobenzene 
Azathioprine 
  
B 
  
Benz[a]anthracene  
Benzene  
Benzidine [and its salts]  
Benzidine-based dyes  
Benzo[b]fluoranthene  
Benzo[j]fluoranthene  
Benzo[k]fluoranthene  
Benzofuran  
Benzo[a]pyrene  
Benzotrichloride  
Benzyl chloride  
Benzyl violet 4B  
Beryllium and beryllium compounds  
Bis(2-chloroethyl)ether  
N,N-Bis(2-chloroethyl)-2- naphthylamine (Chlornapazine)  
Bischloroethyl nitrosourea (BCNU) (Carmustine)  
Bis(chloromethyl)ether and technical-grade chloromethyl methyl 
ether  
Bitumens, extracts of steam-refined and air refined  
Bleomycins  
Bracken fern  
Bromodichloromethane  
Bromoform  
1,3-Butadiene  
1,4-Butanediol dimethanesulfonate (Busulfan, myleran)  
Butylated hydroxyanisole (BHA)  
t-butyl methyl ether  
beta-Butyrolactone 
  
C 
  
Cadmium and cadmium compounds  
Caffeic acid  
Captafol  
Captan  
Carbazole  
Carbon tetrachloride  
Carbon-black extracts  
Carrageenan, degraded  
Ceramic fibers (airborne particles of respirable size)  
Chlorambucil  
Chloramphenicol  
chlorbenzilat  
Chlordane  
Chlordecone (Kepone)  
Chlordimeform  
Chlorendic acid  
Chlorinated Parrafins  
alpha-Chlorinated toluenes  
p-Chloroaniline  
Cchlormadinone aceate 
Chlornaphazine[n,n-bis(2-chloroethyl)-2-naphthylamine]  
Chlorodibromomethane  
Chloroethane (ethyl chloride)  
1-(2-Chloroethyl)-3-cyclohexyl-1-nitrosourea (CCNU) (Lomustine)  
1-(2-Chloroethyl)-3-(4-methylcyclohexyl)-1-nitrosourea 
(Methyl-CCNU)  
Chloroform  
Chloromethyl methyl ether  
3-Chloro-2-methylpropene  
4-Chloro-ortho-phenylenediamine  
p-Chloro-o-toluidine  
Chlorophenols  
Chlorophenoxy herbicides  
Cloroprene  
Chlorothalonil  
Chlorozotocin  
Chromim  
Chromium (hexavalent compounds)  
Chrysene  
C. I. Acid Red 114  
C. I. Basic Red 9 monohydrochloride  
Ciclosporin (Cyclosporin A; Cyclosporine)  
Cinnamyl anthranilate  
Cisplatin  
Citrus Red No. 2  
Clofibrate  
Coal gasification products  
Coal-tars and pitches  
Cobalt metal powder  
Cobalt [II] oxide  
Conjugated estrogens  
Creosotes  
Crystal violet  
para-Cresidine  
cupferron  
cycasin  
cyclamates  
1,4-cyclohexadiene  
cyclophosphamide (anhydrous)  
cyclophosphamide (hydrated) 
  
D
   
D&C Orange No. 17  
D&C Red No. 8  
D&C Red No. 9  
D&C Red No. 19  
Dacarbazine  
Daminozide  
Dantron (Chrysazin; 1,8-Dihydroxyanthraquinone)  
dapsone  
Daunomycin  
DCM  
DDD (Dichlorodiphenyldichloroethane)  
DDE (Dichlorodiphenyldichloroethylene)  
DDT (Dichlorodiphenyltrichloroethane)  
DDVP (Dichlorvos)  
decabromodiphyenyl oxide  
N,N'-Diacetylbenzidine  
2,4-Diaminoanisole  
2,4-Diaminoanisole sulfate  
4,4'-Diaminodiphenyl ether (4,4'-Oxydianiline)  
2,4-Diaminotoluene  
Diaminotoluene (mixed)  
Dibenz[a,h]acridine  
Dibenz[a,j]acridine  
Dibenz[a,h]anthracene  
7H-Dibenzo[c,g]carbazole  
Dibenzo[a,e]pyrene  
Dibenzo[a,h]pyrene  
Dibenzo[a,i]pyrene  
Dibenzo[a,l]pyrene  
1,2-Dibromo-3-chloropropane (DBCP)  
1,2-Dibromoethane  
2,3-Dibromo-1-propanol  
p-Dichlorobenzene  
3,3'-Dichlorobenzidine  
3,3'-Dichlorobenzidine dihydrochloride  
1,4-Dichloro-2-butene  
3,3'-Dichloro-4,4'-diaminodiphenyl ether  
1,1-Dichloroethane  
1,2-Dichloroethane  
Dichloromethane (Methylene chloride)  
1,2-Dichloropropane  
1,3-Dichloropropene  
Dieldrin  
Dienestrol  
Diepoxybutane  
Di(2-ethylhexyl)phthalate  
1,2-Diethylhydrazine  
Diethyl sulfate  
DES, Diethylstilbestrol  
Diglycidyl resorcinol ether (DGRE)  
Dihydrosafrole  
Diisopropyl sulfate  
3,3'-Dimethoxybenzidine (ortho-Dianisidine)  
3,3'-Dimethoxybenzidine dihydrochloride (ortho-dianisidine 
 dihydrochloride)  
para-Dimethylaminoazobenzene  
4-Dimethylaminoazobenzene  
trans-2-[(Dimethylamino)methylimino]-5-[2-(5-nitro-2-furyl)vinyl]-1,3,4
- oxadiazole  
7,12-Dimethylbenz(a)anthracene  
3,3'-Dimethylbenzidine (ortho-Tolidine)   
3,3'-Dimethylbenzidine dihydrochloride  
Dimethylcarbamoyl chloride  
1,1-Dimethylhydrazine (UDMH)  
1,2-Dimethylhydrazine  
Dimethyl sulfate  
Dimethylvinyl Chloride  
1,6-Dinitropyrene  
1,8-Dinitropyrene  
2,4-Dinitrotoluene  
2,6-Dinitrotoluene  
1,4-Dioxane  
Diphenylhydantoin (Phenytoin)  
Diphenylhydantoin (Phenytoin), sodium salt  
Direct Black 38  
Direct Blue 6  
Direct Brown 95  
Disperse Blue 1 
  
E 
  
Epichlorohydrin  
Erionite  
Estradiol 17B  
Estrogens (not conjugated)  
 Estradiol-17  
 Estrone  
 Ethinylestradiol  
 Mestranol  
Estrone  
Ethinylestradiol  
Ethyl acrylate 
Ethyl methanesulfonate  
Ethyl-4,4'-dichlorobenzilate  
Ethylene dibromide  
Ethylene dichloride (1,2-Dichloroethane)  
N-Ethyl-N-nitrosourea  
Ethylene oxide  
Ethylene thiourea  
Ethyleneimine
   
F 
  
Folpet  
Formaldehyde (gas or aqueous solution)   
2-(2-Formylhydrazino)-4-(5-nitro-2-furyl) thiazole  
Furan  
Furazolidone  
Furmecyclox  
Fusarin C 
  
G
   
Glasswool fibers (airborne particles of respirable size)  
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  
Glycidol  
Griseofulvin  
Gyromitrin (Acetaldehyde methylformylhydrazone) 
  
H 
  
HC Blue 1  
Heptachlor  
Heptachlor epoxide  
Hexachlorobenzene  
Hexachlorocyclohexanes  
Hexachlorodibenzodioxin  
Hexachloroethane  
Hexamethylphosphoramide  
Hydrazine  
Hydrazine sulfate  
Hydrazobenzene (1,2-Diphenylhydrazine)  
Hydroxybutyric acid lactone 
  
I 
  
Indeno [1,2,3-cd]pyrene  
Indium trichloride  
IQ (2-Amino-3-methylimidazo[4,5-f]quinoline)  
Iron dextran complex  
Isosafrole 
  
K 
  
Kepone (Chlordecone) 
  
L 
  
Lactofen  
Lasiocarpine  
Lead  
Lead acetate  
Lead phosphate  
Lindane and other hexachlorocyclohexane isomers 
  
M 
  
Mancozeb  
Maneb  
Me-A-alpha-C (2-Amino-3-methyl-9H-pyrido[2, 3-b]indole)  
Medroxyprogesterone acetate  
MeIQ(2-Amino-3,4-dimethylimidazo[4,5-f]quinoline)  
MeIQx(2-Amino-3,8-dimethylimidazo[4,5-f]quinoxaline)  
Melphalan  
Merphalan  
Mestranol  
2-Methylaziridine (Propyleneimine)  
Methylazoxymethanol  
Methylazoxymethanol acetate  
3-Methylcholanthrene  
5-Methylchrysene  
4,4'-Methylene bis(2-chloroaniline) (MOCA)  
4,4'-Methylene bis(N,N-dimethyl)benzenamine  
4,4'-Methylene bis(2-methylaniline)  
4,4'-Methylenedianiline  
4,4'-Methylenedianiline dihydrochloride  
Methylhydrazine and its salts  
Methyl chloromethyl ether  
Methyl-CCNU  
Methyl iodide  
Methyl methanesulfonate  
2-Methyl-1-nitroanthraquinone  
N-Methyl-N'-nitro-N-nitrosoguanidine (MNNG)  
N-Methyl-N-nitrosourea  
N-Methylolacrylamide  
Methylthiouracil  
Metiram  
Metronidazole  
Michler's ketone 
Mineral Oils, untreated and mildly treated  
Mirex  
Mitomycin C  
MOPP  
Monocrotaline  
5-(Morpholinomethyl)-3-[(5-nitro-fufurylidene)-amino]-2-oxazolidinone
  
Mustard gas 
  
N 
  
Nafenopin  
1-Naphthylamine  
2-Naphthylamine  
3-Naphthylamine  
Nickel and certain nickel compounds  
Nickel carbonyl  
Nickel subsulfide  
Niridazole  
Nitrilotriacetic acid  
Nitrilotriacetic acid, trisodium salt monohydrate  
5-Nitroacenaphthene  
5-Nitroacenaphthene  
5-Nitro-o-anisidine  
o-Nitroanisole  
4-Nitrobiphenyl  
6-Nitrochrysene  
Nitrofen  
2-Nitrofluorene  
Nitrofurazone  
1-[(5-Nitrofurfurylidene)amino]-2-imidazollidinone  
1-[(5-Nitrofurfurylidene)-N-[4-(5-Nitro-2-furyl)-2 
thiazolyl]acetamide  
Nitrogen mustard (Mechlorethamine)  
Nitrogen mustard hydrochloride (Mechlorethamine hydrochloride)  
Nitrogen mustard N-oxide  
Nitrogen mustard N-oxide hydrochloride  
2-Nitropropane  
4-Nitropyrene  
N-Nitrosodi-n-butylamine  
N-Nitrosodiethanolamine  
N-Nitrosodiethylamine  
N-Nitrosodimethylamine  
p-Nitrosodiphenylamine  
N-Nitrosodiphenylamine  
N-Nitrosodi-n-propylamine  
N-Nitroso-N-ethylurea  
3-(N-Nitrosomethylamino)propionitrile  
4-(N-Nitrosomethylamino)-1-(3-pyridyl)-1-butanone (NNK)  
N-Nitrosomethylethylamine  
N-Nitroso-N-methylurea  
N-Nitroso-N-methylurethane  
N-Nitrosomethylvinylamine  
N-Nitrosomorpholine  
N-Nitrosonornicotine  
N-Nitrosopiperidine  
N-Nitrosopyrrolidine  
N-Nitrososarcosine  
Norethisterone (Norethindrone) 
  
O 
  
Ochratoxin A  
Oestrogen, nonstreoidal  
Oestrogen, steroidal  
Oil Orange SS  
4,4'-Oxydianiline  
Oxadiazon  
Oxymetholone  
Oxazepam 
  
P 
  
Panfuran S  
Pentachlorophenol  
Phenacetin  
Phenazopyridine hydrochloride  
Phenesterin  
Phenobarbital  
Phenoxybenzamine  
Phenoxybenzamine hydrochloride  
Phenyl glycidyl ether  
Phenylhydrazine and its salts  
o-Phenylphenate, sodium  
Phenytoin  
PhiP(2-Amino-1-methyl-6-phenylimidazol[4,5-b]pyridine)  
Polybrominated biphenyls  
Polychlorinated biphenyls  
Polychlorinated biphenyls (containing 60 or more percent chlorine by 
molecular weight)  
Polychlorinated dibenzo-p-dioxins  
Polychlorinated dibenzofurans  
Polycyclic aromatic hydrocarbons  
Polygeenan  
Ponceau MX  
Ponceau 3R  
Potassium bromate  
Procarbazine  
Procarbazine hydrochloride  
Procymidone  
Progesterone  
Progestins  
1,3-Propane sultone  
Progargite  
beta-Propiolactone  
Propylene oxide  
Propylthiouracil  
Pyridinium chlorochromate 
  
R 
  
Radionuclides  
Radon  
Reserpine  
Residual (heavy) fuel oils  
Rhodamine 101 
  
S 
  
Saccharin  
Saccharin, sodium  
Safrole  
Selenium sulfide  
Shale-oils  
Silica, crystalline (airborne particles of respirable size)  
Sodium dichromate  
Sodium hexafluoroarsenate(V)  
Sodium ortho-phenylphenate 
Sterigmatocystin  
Streptozotocin  
Styrene  
Styrene oxide  
Sulfallate  
Sulphur trioxide  
Sulphur trioxide N,N-dimethylformamide complex 
  
T 
  
Talc containing asbestiform fibers  
Terrazole  
Testosterone and its esters  
2,3,7,8-Tetrachlorodibenzo-para-dioxin (TCDD)  
1,1,2,2-Tetrachloroethane  
Tetrachloroethylene (Perchloroethylene)  
p-a,a,a-Tetrachlorotoluene  
3,3',5,5'-tetramethylbenzidine  
Tetranitromethane  
Thioacetamide  
4,4'-Thiodianiline  
Thiourea  
Thorium dioxide  
Tobacco, oral use of smokeless products  
Tobacco smoke  
Toluene diisocyanate  
p-toluenesulphonic acid  
ortho-Toluidine  
ortho-Toluidine hydrochloride  
para-Toluidine  
Toxaphene (Polychorinated camphenes)  
Treosulfan (Tresoluphan)  
Trichlormethine (Trimustine hydrochloride)  
2,4,6-Trichlorophenol  
1,2,3-Trichloropropane  
Triphenyltin hydroxide  
Trichloroethylene  
Tris(aziridinyl)-para-benzoquinone (Triaziquone)  
Tris(1-aziridinyl)phosphine sulfide (Thiotepa)  
Tris(2-chloroethyl) phosphate  
Tris(2,3-dibromopropyl)phosphate  
TRIZMA base  
Trp-P-1 (Tryptophan-P-1) 
(3-Amino-1,4-dimethyl-5H-pyrido[4,3-b]indole)  
Trp-P-2 (Tryptophan-P-2) (3-Amino-1-methyl-5H-pyrido[4,3-b]indole)  
Trypan blue 
  
U 
  
Uracil mustard  
Urethane (Ethyl carbamate) 
  
V 
  
Vinyl bromide  
Vinyl chloride  
4-Vinyl-1-cyclohexene diepoxide (Vinyl cyclohexene dioxide)  
n-vinyl pyrollidone  
Vinyl trichloride (1,1,2-Trichloroethane) 
  
X 
  
2,6-Xylidine (2,6-Dimethylaniline) 
  
Z 
  
Zineb 
  
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