1,2,3-trihydroxy-benzene definition of 1,2,3-trihydroxy-benzene in the Free Online Encyclopedia.

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 [‚pī·rō′ga‚lȯl]

(organic chemistry)

pyrogallic acid

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.

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No references found	Živojin Jocic Žmud Horse Žmuidzinavicius, Antanas Jono Žujovic, Živojin Žukas, Stepas Adolfo Župa Župancic, Oton Žuvintas Žyrardów, Strike of 1883 žanis Griva £ 0 0 Canada! national song of Canada 0 Deutschland, Hoch in Ehren! 0/1 knapsack problem 0K 0x 1 1, 2, 3-Benzotriazole 1,1,1-chlorodifluoroethane 1,1,2-trichloro-1,2,2-trifluoroethane 1,1-diethoxyethane 1,2,3,4,5,6-hexachlorocyclohexane 1,2,3-benzotriazole 1,2,3-trichloropropane 1,2,3-trihydroxy-benzene 1,2,4-benzenetricarboxylic acid 1,2,4-benzenetriol 1,2-benzopyrone 1,2-butylene oxide 1,2-epoxyethane 1,2-ethanedithiol 1,2-naphthoquinone 1,3-butadiene 1,3-butylene glycol 1,3-cyclohexadiene 1,3-cyclopentadiene 1,3-dichloro-2-propanol 1,4-butylene glycol 1,4-dichlorobutane 1,4-dioxane 1,4-dithiothreitol 1,4-naphthoquinone 1,5-cyclooctadiene 1,5-pentanediol 1,6-hexanediol 1,8-dihydroxyanthraquinone 1--2-thiourea 1-2-3 1-amino-2-naphthol-4-sulfonic acid 1-aminoanthraquinone	1,000,000 1,000,000 (number) 1,000,000 (number) 1,1'-Azobisformamide 1,1'-Dioctadecyl 3,3,3',3'-Tetramethylindocarbocyanine Perchlorate 1,1'-Thiocarbonyl Diimidazole 1,1,1-chlorodifluoroethane 1,1,1-Trichloroethane 1,1,1-Trichloroethane 1,1,2-trichloro-1,2,2-trifluoroethane 1,1,2-Trichloroethane 1,1-Dichloroethane 1,1-Dichloroethene 1,1-diethoxyethane 1,10-phenanthroline 1,10-phenanthroline 1,10-phenanthroline 1,2,3,4,5,6-hexachlorocyclohexane 1,2,3,4,5,6-hexachlorocyclohexane 1,2,3,4,5,6-hexachlorocyclohexane 1,2,3,4,5,6-hexahydroxycyclohexane 1,2,3,4,5,6-hexahydroxycyclohexane 1,2,3,4,5,6-hexahydroxycyclohexane 1,2,3,4,6,7,8,9-Octachlorodibenzo-p-dioxin 1,2,3,4,7,7-hexachloronorbornadiene 1,2,3-benzotriazole 1,2,3-propanetriol 1,2,3-propanetriol 1,2,3-propanetriol 1,2,3-trichloropropane 1,2,3-trihydroxy-benzene 1,2,4-benzenetricarboxylic acid 1,2,4-benzenetriol 1,2,4-Trimethylbenzene 1,2-benzenedicarboxylic acid 1,2-benzenedicarboxylic acid 1,2-benzenedicarboxylic acid 1,2-benzenediol 1,2-benzenediol 1,2-benzenediol 1,2-benzopyrone 1,2-butylene oxide 1,2-Dibromo-3-chloropropane 1,2-Dibromo-3-chloropropane 1,2-Dibromoethane 1,2-Dibromoethane 1,2-Dibromoethane 1,2-Dichlorobenzene 1,2-Dichloroethane 1,2-Dichloroethane 1,2-dihydroxybenzene 1,2-dihydroxybenzene 1,2-dihydroxybenzene 1,2-diphenylhydrazine 1,2-diphenylhydrazine 1,2-diphenylhydrazine 1,2-dipole 1,2-epoxyethane 1,2-epoxyethane 1,2-etandiol 1,2-etandiol

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Živojin Jocic

Žmud Horse

Žmuidzinavicius, Antanas Jono