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benzidine

[ben-zi-deen, -din] /ˈbɛn zɪˌdin, -dɪn/
noun, Chemistry
1.
a grayish, crystalline, slightly water-soluble, basic compound, C 12 H 12 N 2 , usually derived from nitrobenzene: used chiefly in the synthesis of certain azo dyes, especially Congo red.
Origin
1875-1880
1875-80; benz- + -id3 + -ine2
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for benzidine

benzidine

/ˈbɛnzɪˌdiːn; -dɪn/
noun
1.
a grey or reddish poisonous crystalline powder that is used mainly in the manufacture of dyes, esp Congo red. Formula: NH2(C6H4)2NH2
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
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benzidine in Medicine

benzidine ben·zi·dine (běn'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.
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benzidine in Science
benzidine
  (běn'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 © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for benzidine

an organic chemical belonging to the class of amines and used in making numerous dyestuffs. The azo dyes derived from benzidine are important because, unlike simpler classes of azo dyes, they become strongly fixed to cotton without a mordant.

Learn more about benzidine with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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