13.6 Carcinogenicity And Toxicity

Benzene and polynuclear hydrocarbons containing more than two benzene rings fused together are toxic and said to possess cancer producing (carcinogenic) property.

Such polynuclear hydrocarbons are formed on incomplete combustion of organic materials like tobacco, coal and petroleum.

They enter into human body and undergo various biochemical reactions and finally damage DNA and cause cancer. Some of the carcinogenic hydrocarbons are given below.

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