gallic acid(redirected from Trihydroxy-benzoic acid)
Also found in: Dictionary, Thesaurus, Encyclopedia.
gal·lic ac·id(gal'ik as'id),
Usually made from tannic acid or nutgalls; used locally as an astringent, for the same purpose as tannic acid.
Farlex Partner Medical Dictionary © Farlex 2012
C6H2(OH)3COOH, a colorless crystalline acid. It occurs naturally as an excrescence on the twigs of trees, esp. oaks, as a reaction to the deposition of gall wasp eggs. It is used as a skin astringent and in the manufacture of writing inks and dyes.
CAS # 149-91-7
See also: acid
Medical Dictionary, © 2009 Farlex and Partners
gal·lic ac·id(gal'ik as'id)
A topical astringent.
Medical Dictionary for the Dental Professions © Farlex 2012