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pyrogallol
py·ro·gal·lol P0688000 (pī′rō-găl′ôl′, -ōl′, -ŏl′, -gô′lôl′, -lōl′, -lŏl′)n. A white, toxic crystalline phenol, C6H3(OH)3, used as a photographic developer and to treat certain skin diseases. Also called pyrogallic acid. [pyro- + gall(ic acid) + -ol.] py′ro·gal′lic (-găl′ĭk, -gô′lĭk) adj.pyrogallol (ˌpaɪrəʊˈɡælɒl) n (Elements & Compounds) a white lustrous crystalline soluble phenol with weakly acidic properties; 1,2,3-trihydroxybenzene: used as a photographic developer and for absorbing oxygen. Formula: C6H3(OH)3[C20: from pyro- + gall(ic)2 +-ol1] ˌpyroˈgallic adjpy•ro•gal•lol (ˌpaɪ rəˈgæl ɔl, -ɒl, -ˈgɔ lɔl, -lɒl) n. a white, crystalline, water-soluble, poisonous, solid, phenolic compound, C6H3(OH), obtained by heating gallic acid and water. [1875–80; pyro- + gall(ic) + -ol1] py`ro•gal′lic (-ˈgæl ɪk, -ˈgɔ lɪk) adj. ThesaurusNoun | 1. | pyrogallol - a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developerpyrogallic acidphenol - any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups |
pyrogallol
pyrogallol (pī'rōgăl`ōl) or pyrogallic acid (–ĭk), C6H6O3, white, crystalline, aromatic compound with a biting taste; it is poisonous. It melts at 133°C; and boils at 309°C;. In alkaline solution it is an active reducing agent. Pyrogallol is widely used in photographic developing and in the manufacture of some dyes. Chemically it is a phenol; its IUPAC name is 1,2,3-trihydroxybenzene.Pyrogallol (1,2,3-trihydroxybenzene), a trihydric phenol; a colorless, odorless crystalline solid. Melting point, 133°–134°C; boiling point, 309°C. It darkens rapidly upon exposure to air, sublimes readily, and is soluble in water, alcohol, and ether. Pyrogallol is produced commercially by dry distillation (decarboxylation) of gallic acid and tannins (derivatives of gallic 
acid). The rapid and quantitative absorption of oxygen by pyro-gallol is used in analytical chemistry, including gas analysis, and in laboratory practice. Pyrogallol is also used as a photographic developer. It is a source material in the synthesis of certain dyes. pyrogallol[‚pī·rō′ga‚lȯl] (organic chemistry) pyrogallic acid pyrogallol
pyrogallol (pī′rō-găl′ôl′, -ōl′, -ŏl′, -gô′lôl′, -lōl′, -lŏl′)n. A white, toxic crystalline phenol, C6H3(OH)3, used as a photographic developer and to treat certain skin diseases. Also called pyrogallic acid. py′ro·gal′lic (-găl′ĭk, -gô′lĭk) adj.pyrogallol (pī″rō-găl′ōl″) C6H6O3; a toxic chemical derived from gallic acid.See PYRO See PYROpyrogallol Related to pyrogallol: purpurogallinSynonyms for pyrogallolnoun a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developerSynonymsRelated Words |