Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

gallic acid (HO)3C6H2COOH




Also known as 3,4,5-trihydroxybenzoic acid, an acid occurring plants, including oak galls, sumach, and tea. Gallic acid is obtained from tannins by hydrolysis. It is used in ink, dyes, and as a mild antiseptic and astringent. On heating it gives pyrogallol, a photographic developer.


Related category

   • ORGANIC CHEMISTRY