Benzene

Benzene (C6H6) is an aromatic hydrocarbon that was used an industrial solvent and as an additive in fossil-based fuels.

The complex hydrocarbon used on Earth called gasoline was made of such components as benzene, ethylene, and acetylene. 

Yalosians required ten percent of a room's atmosphere to be benzene, as well as sixty percent nitrogen and thirty percent hydrogen fluoride. 

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Benzol