國際癌症研究機構二B類致癌物

2B類致癌物（Group 2B carcinogens），為國際癌症研究機構對致癌物質的分類，此類物質（或其混合物）可能對人類致癌。截至2024年5月2日，共用323種2B類致癌物（如黃樟素、四氯化碳、電磁波、抗甲狀腺藥物丙硫氧嘧啶、二異氰酸甲苯、抗愛滋病藥物齊多夫定、汽油引擎廢氣、乾洗業等），對人類為有可能致癌物，對動物為很可能也是致癌物。更多詳細信息，可以搜尋國際癌症研究機構（IARC）專著。

**物質和物質組合**
Diisopropyl sulfate
*3,3'-Dimethoxybenzidine (o-Dianisidine)
*甲基黃
*trans-2-(Dimethylamino)methylimino-5-2-(5-nitro-2-furyl)-vinyl-1,3,4-oxadiazole
*2,6-Xylidine (2,6-Dimethylaniline)
*3,3'-Dimethylbenzidine (o-Tolidine)
*偏二甲肼
*3,7-Dinitrofluoranthene
*3,9-Dinitrofluoranthene
*1,6-Dinitropyrene
*1,8-Dinitropyrene
*2,4-二硝基甲苯
*二硝基甲苯
*1,4-二噁烷
*Disperse Blue 1
*1,2-環氧丁烷
*丙烯酸乙酯
*乙苯
*1,2-二氯乙烷
*甲磺酸乙酯
*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
*呋喃
*Glu-P-1 (2-Amino-6-methyldipyrido1,2-a:3',2'-dimidazole)
*Glu-P-2 (2-Aminodipyrido1,2-a:3',2'-dimidazole)
*Glycidaldehyde
*灰黃黴素
*HC Blue No. 1
*七氯
*六氯苯
*六氯乙烷
*六氯環己烷s
*六甲基磷酰胺 (HMPA)
*人類免疫缺陷病毒 type 2 (infection with)
*人類乳突病毒es: some types other than 16, 18, 31 and 33
*聯氨
*1-Hydroxyanthraquinone
*Indeno1,2,3-cdpyrene
*Iron-dextran complex
*異戊二烯
*Lasiocarpine
*鉛
*磁場s (極低頻)
*MeA-a-C (2-Amino-3-methyl-9H-pyrido2,3-bindole)
*Medroxyprogesterone acetate
*MeIQ (2-Amino-3,4-dimethylimidazo4,5-fquinoline)
*MeIQx (2-Amino-3,8-dimethylimidazo4,5-fquinoxaline)
*Merphalan
*丙烯亞胺 (Propyleneimine)
*Methylazoxymethanol acetate
*5-Methylchrysene
*4,4'-Methylene bis(2-methylaniline)
*4,4'-Methylenedianiline
*Methylmercury compounds 1
*2-Methyl-1-nitroanthraquinone (uncertain purity)
*N-Methyl-N-nitrosourethane
*Methylthiouracil
*甲硝唑
*Michler's base (4,4'-methylene-bis(N,N-dimethyl)benzenamine)
*米氏酮 (4,4'-bis(dimethylamino)benzophenone)
*Microcystin-LR
*滅蟻樂
*絲裂黴素C
*米託蒽醌
*野百合鹼
*5-(Morpholinomethyl)-3-(5-nitrofurfurylidene)amino-2-oxazolidinone
*萘酚平
*萘
*鎳, metallic and alloys
*Niridazole
*氨三乙酸 and its salts 1
*5-Nitroacenaphthene
*2-Nitroanisole
*硝基苯
*6-Nitrochrysene
*護谷 (technical-grade)
*2-Nitrofluorene
*1-(5-Nitrofurfurylidene)amino-2-imidazolidinone
*N-4-(5-Nitro-2-furyl)-2-thiazolylacetamide
*Nitrogen mustard N-oxide
*硝基甲烷
*2-硝基丙烷
*1-硝基芘
*4-Nitropyrene
*N-Nitrosodi-n-butylamine
*N-Nitrosodiethanolamine
*N-Nitrosodi-n-propylamine
*3-(N-Nitrosomethylamino)propionitrile
*N-Nitrosomethylethylamine
*N-Nitrosomethylvinylamine
*N-Nitrosomorpholine
*N-亞硝基哌啶
*N-Nitrosopyrrolidine
*N-Nitrososarcosine
*Ochratoxin A
*Oestrogen-progestogen therapy, postmenopausal
*Oil Orange SS
*奧沙西泮
*坡縷石 (attapulgite)  (long fibres, >5微米)
*Panfuran S (containing dihydroxymethylfuratrizine)
*非那吡啶
*苯巴比妥
*酚酞
*Phenoxybenzamine hydrochloride
*Phenyl glycidyl ether
*苯妥英
*PhIP (2-amino-1-methyl-6-phenylimidazo(4,5-b)pyridine)
*Polychlorophenols and their sodium salts (mixed exposures)
*Ponceau MX
*Ponceau 3R
*溴酸鉀
*Progestins
*Progestogen-only contraceptives
*1,3-丙磺酸內酯
*Β-丙內酯
*環氧丙烷
*-{zh-hans:丙硫氧嘧啶;zh-hant:硫月尿酮;}-（Propylthiouracil、PTU），抗甲狀腺藥物
*無線電波, such as, but not limited to, those associated with 移動電話 
*耐火陶瓷纖維
*瑞德靈
*黃樟素Safrole
*日本血吸蟲 (infection with)
*Sodium orthophenyl phenol
*Special-purpose fibres such as E-glass and '475' glass fibres
*Sterigmatocystin
*鏈脲佐菌素
*苯乙烯
*Sulfallate
*四氟乙烯
*四硝基甲烷
*硫乙醯胺
*4,4'-Thiodianiline
*Thiouracil
*二氧化鈦
*二異氰酸甲苯（2,4-Toluene diiso-cyanate, 2,4-TDI）
*三氯氮芥 (Trimustine hydrochloride)
*Trp-P-1 (3-Amino-1,4-dimethyl-5H-pyrido4,3-bindole)
*Trp-P-2 (3-Amino-1-methyl-5H-pyrido4,3-bindole)
*臺盼藍
*烏拉莫司汀
*五氧化二釩
*乙酸乙烯酯
*4-乙烯基環己烯
*4-Vinylcyclohexene diepoxide
*扎西他濱
*齊多夫定（Zidovudine，AZT）
*阿斯巴甜

**混合物**
瀝青
*角叉菜膠
*氯化石蠟
*柴油
*汽油發動機尾氣
*重油
*汽油
*品紅染料
*醃、泡製的蔬菜（一些亞洲傳統食品）
*多溴化聯苯（多溴聯苯標準品）
*毒殺芬（多氯莰烯）
*串珠鐮刀菌分泌的毒素
*焊接煙塵

**接觸場合**
房屋建材與木工裝潢
*鈷（未存放於碳化鎢盒內）
*乾洗
*消防
*印刷過程（職業接觸）
*滑石粉（粉塵）
*紡織工業（生產過程）

**註釋**
腳註
*1 Evaluated as a group.
*2 There is limited evidence in humans that coffee drinking is carcinogenic in the urinary bladder. 
*3 There is some evidence of an inverse relationship between coffee drinking and cancer of the large bowel.

**引用**

**外部鏈接**
  致癌物分類表描述, 國際癌症研究機構
**  致癌物分類表（最新版本）
** date=20120920150724 （2015年11月5日更新）