Phloroglucinol Impurity

English Synonyms

1,2,3-Trihydroxybenzen;1,2,3-trihydroxy-benzen;1,2,3-trihydroxybenzen(czech);1,2,3-trihydroxybenzene(pyrogallol);2,3-Dihydroxyphenol;Benzene, 1,2,3-trihydroxy-;benzene-1,2,3-triol;C.I. Oxidation Base 32

Pyrogallol Properties

Pyrogallol Uses and Synthesis Methods

Use

Pyrogallol can be used to prepare metal colloidal solutions, leather coloring, dyeing of fur, hair, etc., etching, etc.; and can be used as a developer for film, infrared photography thermosensitizer, styrene and polystyrene polymerization inhibitor Agents, pharmaceutical and dye intermediates, and analytical reagents, etc. Pyrogallic acid is used as an oxygen absorber in gas analysis, and in cosmetics, it is used in face powder, hair conditioners, hair dyes, etc.

Mainly used in the production of developers, polymerization inhibitors and infrared photography thermosensitizers, and also used as intermediates for medicines and dyes.

Used as analytical reagents, reducing agents and developers.

Metal complexing agent. Gravimetric determination of bismuth and antimony. Reducing agent for gold, silver, mercury salts, phosphomolybdic acid and phosphotungstic acid, used in gas analysis to absorb oxygen. Separate titanium, iron and aluminum when measuring tantalum and niobium. Used for color reaction of nitrite, molybdenum, niobium, titanium, cerium, bismuth, copper, vanadium, iron, iodate, etc.

Production Method

Add gallic acid and water to the autoclave, decarboxylate it at 200-210°C for 0.5 hours, and obtain the finished product through decolorization, filtration, and evaporation, or refine it by vacuum sublimation.