- a white, crystalline compound, C6H6O2, formed by the reduction of quinone: used chiefly in photography and to inhibit autoxidation reactions.
Origin of hydroquinone
Also called hy·dro·quin·ol [hahy-druh-kwin-awl, -ol] /ˌhaɪ drəˈkwɪn ɔl, -ɒl/, quinol.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for hydroquinone
Hydroquinone as a developer was introduced this year by Eder and Toth, but it did not make much progress at first.The Evolution of Photography
By reaction with sodium sulphite it is converted into a hydroquinone sulphonate of deep purple colour.
Hydroquinone was obtained by Caventou and Pelletier by heating quinic acid, but these chemists did not recognize its true nature.Coal
When phenol is oxidized in acid solution by chlorine, tetrachlorquinone is obtained, a compound also obtainable from hydroquinone.
When hydrolyzed by mineral acids or emulsin, it yields glucose and hydroquinone.The Chemistry of Plant Life
Roscoe Wilfred Thatcher
- a white crystalline soluble phenol used as a photographic developer; 1,4-dihydroxybenzene. Formula: C 6 H 4 (OH) 2Also called: quinol
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
- A white crystalline compound used as an antioxidant, a stabilizer, and a reagent.hydroquinol
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.