Also known as benzenecarboxylic acid, with a chemical formula C7H6O2 , molecular mass 122.12 g·mol−1, melting point 122 °C , dencity 1.2659 g/cm3.
Benzoic acid is a white crystalline carboxylic acid. It is used as a food preservative. The carboxyl group (–COOH) directs further substitution onto the benzene ring in the 3 position.