- a colorless, crystalline, dihydroxyl derivative of benzene, C6H6O2, the ortho isomer, used chiefly in photography, for dyeing, and as a reagent; pyrocatechol.
Origin of catechol
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for catechol
Tanning materials are divided into two main classes: Pyrogallol, Catechol.Leather
K. J. Adcock
These skins are tanned with turwar bark, which contains a catechol tannin.
The other is called the catechol group and is strongly condemned.Library Bookbinding
Arthur Low Bailey
Catechol tans, often obtained from barks, contain usually about 60 per cent.
It is a catechol tan of peculiarly mellow quality and great practical value.
- a colourless crystalline phenol found in resins and lignins; 1,2-dihydroxybenzene. It is used as a photographic developer. Formula: C 6 H 4 (OH) 2Also called: pyrocatechol
C20: from catechu + -ol 1
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A biologically important organic phenol occurring naturally in lignins and resins. It has two hydroxyl groups attached to a benzene ring. Catechol is very caustic and is used in dyeing and as a photographic developer and an antiseptic. Chemical formula: C6H6O2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.