English definition of Pyrogallol

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Definition of pyrogallol

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Pyrogallol (n.) 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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Pyrogallate :: Pyrogallate (n.) A salt of pyrogallic acid; an ether of pyrogallol.

Picamar :: Picamar (n.) An oily liquid hydrocarbon extracted from the creosote of beechwood tar. It consists essentially of certain derivatives of pyrogallol.

Pyrogallol :: Pyrogallol (n.) 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..

Pyrogallic :: Pyrogallic (a.) Pertaining to, derived from, or designating, an acid called pyrogallol. See Pyrogallol..

Phloroglucin :: Phloroglucin (n.) A sweet white crystalline substance, metameric with pyrogallol, and obtained by the decomposition of phloretin, and from certain gums, as catechu, kino, etc. It belongs to the class of phenols. [Called also phloroglucinol.].