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Benzo(a)pyrene

Benzo(a)pyrene is commonly found in cigarette smoke, coal tar and fuel exhaust.

Chemical Formula: C₂₀H₁₂

Other names: benz(a)pyrene, 3,4-benzopyrene

Layman's explanation: Benzo(a)pyrene (BaP) is pale yellow monoclinic or orthorhombic crystal with a faint aromatic odor. Benzo(a)pyrene is a polycyclic aromatic hydrocarbon (PAH) formed as a result of incomplete combustion of organic materials. It is commonly found in cigarette smoke, coal tar, wood-burning stoves and furnaces, fuel exhaust from motor vehicles and other gasoline and diesel engines. BaP is classified as a probable human carcinogen and is a toxic pollutant. Human exposure to BaP occurs primarily through ingestion of contaminated food and water, inhalation of polluted air and tobacco smoke. BaP is not produced or used commercially in the US; however, it is used in chemical research as a positive control in a variety of short-term tests for possible mutagens and carcinogens of mutagenicity and carcinogenicity.

Keywords: pollutant, carcinogen

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