List of cigarette smoke carcinogens

Commercial tobacco smoke is a mixture of more than 5,000 chemicals. According to the U.S. Department of Health and Human Services, the following are known human carcinogens found in cigarette smoke:

Chemical	Amount (per cigarette)
Acetaldehyde	980 micrograms to 1.37 milligrams
Acrylonitrile	formerly 1 to 2 milligrams. This product was used as a fumigant in tobacco. Its use has since been discontinued.
4-Aminobiphenyl	0.2 to 23 nanograms
o-Anisidine hydrochloride	unknown
Arsenic	unknown
Benzene	5.9 to 75 micrograms
Beryllium	0.5 nanograms
1,3-Butadiene	152 to 400 micrograms
Cadmium	1.7 micrograms
1,1-Dimethylhydrazine	unknown
Ethylene oxide	unknown
Formaldehyde	unknown
Furan	unknown
Heterocyclic amines	unknown
Hydrazine	32 micrograms
Isoprene	3.1 milligrams
Lead	unknown
2-Naphthylamine	1.5 to 35 nanograms
Nitromethane	unknown
N-Nitrosodi-n-butylamine	3 nanograms
N-Nitrosodiethanolamine	24 to 36 nanograms
N-Nitrosodiethylamine	up to 8.3 nanograms
N-Nitrosodimethylamine	5.7 to 43 nanograms
N-Nitrosodi-n-propylamine	1 nanogram
4-(N-Nitrosomethylamino)-1-(3-pyridyl)-1-butanone	up to 4.2 micrograms
N-Nitrosonornicotine	14 micrograms
N-Nitrosopiperidine	unknown
N-Nitrosopyrrolidine	113 nanograms
N-Nitrososarcosine	22 to 460 nanograms
Polonium-210	variable
Polycyclic aromatic hydrocarbons	28 to 100 milligrams
o-Toluidine	32 nanograms
Vinyl chloride	5.6 to 27 nanograms

See also

• Composition of electronic cigarette aerosol
• Health effects of tobacco smoking
• List of additives in cigarettes