Benzene (or benzol) (cyclic benzene) is a colorless liquid and one of the gasoline (fuel) compounds is volatile, and its highly flammable vapors are carcinogenic and have a strong, airy and sweet smell that smells at fuel stations, and its chemical composition is formed from a hexagonal ring of carbon and hydrogen (C6H6) The hexagonal ring of benzene is the simplest molecule in aromatic organic chemistry. It is one of the natural components of crude oil and an important industrial solvent. It is used in the manufacture of medicines, plastics, synthetic rubbers, dyes and napalm. It can be made from ingredients other than oil. Gasoline is one of the simplest aromatic hydrocarbons.