Benzene is a very flammable liquid, colorless, a chemical compound with a sweet smell. Benzene was first identified in 1825 by Michael Faraday. It is used as an additive in gasoline, but in small amounts because it was shown that it is carcinogenic. It is an important solvent in the manufacturing of plastics, dyes and drugs. It can be found in the air from emissions from burning oil and coal. The exposure of humans to benzene can cause dizziness, nausea and respiratory tract irritation. The average price of Benzene is $750-$800per ton.