Benzidine. (n.d.). In YourDictionary. Retrieved from https://www.yourdictionary.com/benzidine
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.
Gattermann, Ber., 1893, 26, p. 1844); in alcoholic alkaline solution it yields azoxybenzene; in acid alcoholic solution, benzidine; in ammoniacal alcoholic solution, phenylhydrazine.
It is used commercially for the preparation of aniline and of benzidine; and in perfumery (oil of mirbane).
BENZIDINE (DIPARA-DIAMINO-DIPHENYL),NH 2 C 6 H 4 C 6 H 4 NH2, a chemical base which may be prepared by the reduction of the corresponding dinitro-diphenyl, or by the reduction of azobenzene with tin and hydrochloric acid.
Benzidine crystallizes in plates (from water) which melt at '22' C., and boil above 360° C., and is characterized by the great insolubility of its sulphate.