tolidine

[tol-i-deen, -din]

noun Chemistry.

any of several isomeric derivatives of biphenyl containing two methyl and two amino groups, especially the ortho isomer that is used as a reagent and in the preparation of dyes.

Origin of tolidine

First recorded in 1895–1900; tol(uene) + -id³ + -ine²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for tolidine

Historical Examples of tolidine

Thus diazotised benzidine and tolidine combine with salicylic acid to form valuable yellow azo-dyes known as “chrysamines.”
Coal
Raphael Meldola
It is impossible to attempt to specify by name any of these recent benzidine and tolidine dyes.
Coal
Raphael Meldola

British Dictionary definitions for tolidine

tolidine

noun

any of several isomeric compounds, esp the ortho- isomer, which is a white or reddish crystalline substance used in the manufacture of dyes and resins. Formula: (C 6 H 3 NH 2 CH 3) 2

Word Origin for tolidine

C19: from tol (uene) + -id ³ + -ine 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