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benzidine
[ ben-zi-deen, -din ]
/ ˈbɛn zɪˌdin, -dɪn /
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noun Chemistry.
a grayish, crystalline, slightly water-soluble, basic compound, C12H12N2, usually derived from nitrobenzene: used chiefly in the synthesis of certain azo dyes, especially Congo red.
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Words nearby benzidine
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
How to use benzidine in a sentence
Thus diazotised benzidine and tolidine combine with salicylic acid to form valuable yellow azo-dyes known as “chrysamines.”
Coal|Raphael MeldolaBenzidine (Wallis) has also been suggested for the detection of free chlorine.
Chlorination of Water|Joseph RaceEllms and Hauser investigated benzidine in 1913 and found it to be inferior to o-tolidine as a test reagent for free chlorine.
Chlorination of Water|Joseph RaceIt is impossible to attempt to specify by name any of these recent benzidine and tolidine dyes.
Coal|Raphael Meldola
British Dictionary definitions for benzidine
benzidine
/ (ˈbɛnzɪˌdiːn, -dɪn) /
noun
a grey or reddish poisonous crystalline powder that is used mainly in the manufacture of dyes, esp Congo red. Formula: NH 2 (C 6 H 4) 2 NH 2
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
Medical definitions for benzidine
benzidine
[ bĕn′zĭ-dēn′ ]
n.
A yellowish, white, or reddish-gray crystalline powder used in dyes and to detect blood.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for benzidine
benzidine
[ bĕn′zĭ-dēn′ ]
A yellowish, white, or reddish-gray crystalline powder that is produced synthetically and is carcinogenic. It is used in making dyes, as a reagent, and in detecting blood stains. Chemical formula: C12H12N2.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.