pyrogallol
a white, crystalline, water-soluble, poisonous, solid, phenolic compound, C6H3(OH)3, obtained by heating gallic acid and water: used chiefly as a developer in photography, as a mordant for wool, in dyeing, and in medicine in the treatment of certain skin conditions.
Origin of pyrogallol
1- Also called pyrogallic acid.
Other words from pyrogallol
- py·ro·gal·lic [pahy-ruh-gal-ik, -gaw-lik], /ˌpaɪ rəˈgæl ɪk, -ˈgɔ lɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use pyrogallol in a sentence
The cry as always is to use plenty of pyrogallic acid and you can get any amount of intensity.
It is then immersed in mercuric chloride for half an hour, and again intensified with pyrogallic acid.
This is intensified by pyrogallic acid, and afterward washed with a pure water to which a little ammonia has been added.
Pyrogallic is the most active agent, and might be used alone with water; but for special reasons it is not desirable.
Scientific American Supplement, No. 288 | VariousBut when pyrogallic acid came in we switched over to that even though it did stain our fingers and sometimes our plates.
Creative Chemistry | Edwin E. Slosson
British Dictionary definitions for pyrogallol
/ (ˌpaɪrəʊˈɡælɒl) /
a white lustrous crystalline soluble phenol with weakly acidic properties; 1,2,3-trihydroxybenzene: used as a photographic developer and for absorbing oxygen. Formula: C 6 H 3 (OH) 3
Origin of pyrogallol
1Derived forms of pyrogallol
- pyrogallic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Browse