benzidine

[ ben-zi-deen, -din ]
/ ˈbɛn zɪˌdin, -dɪn /

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.

Origin of benzidine

First recorded in 1875–80; benz- + -id3 + -ine2

Words nearby benzidine

benzenecarboxylic acid, benzenesulfonic acid, benzenoid, benzethonium chloride, benzi box, benzidine, benzimidazole, benzine, benzo-, benzoate, benzocaine

Example sentences from the Web for benzidine

  • Benzidine (Wallis) has also been suggested for the detection of free chlorine.

    Chlorination of Water |Joseph Race

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

Medical definitions for benzidine

benzidine
[ bĕn′zĭ-dēn′ ]

n.

A yellowish, white, or reddish-gray crystalline powder used in dyes and to detect blood.

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.