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pyrogallic acid definitions

WordNet (r) 3.0 (2005)

n
1: a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developer [syn: pyrogallol, pyrogallic acid]

Oxford Reference Dictionary

n. a weak acid used as a developer in photography, etc.

Webster's 1913 Dictionary

Pyrogallol Pyr`o*gal"lol, n. [Pyrogallic + -ol.] (Chem.) A phenol metameric with phloroglucin, obtained by the distillation of gallic acid as a poisonous white crystalline substance having acid properties, and hence called also pyrogallic acid. It is a strong reducer, and is used as a developer in photography and in the production of certain dyes.



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