Model of a molecule of benzene. Carbon atoms are shown as black and hydrogen as white.

In 1964, the German postal service issued a stamp in commemoration of 100 years discovery of Benzene

Benzene, also known as benzol, is an organic chemical compound with the formula C₆H₆. It is a colorless and flammable liquid with a sweet smell. Benzene molecules are a ring of six carbon atoms that are each bonded to one hydrogen atom. It is an aromatic compound, meaning the ring has alternating double bonds.