Benzidine



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.
Historical Examples

Chlorination of Water Joseph Race

noun
a grey or reddish poisonous crystalline powder that is used mainly in the manufacture of dyes, esp Congo red. Formula: NH2(C6H4)2NH2
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.

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