tolidine

American  

[tol-i-deen, -din] / ˈtɒl ɪˌdin, -dɪn /

noun

Chemistry.

1. 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.

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tolidine British  

/ ˈtɒlɪˌdiːn /

noun

1. 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

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Etymology

Origin of tolidine

First recorded in 1895–1900; tol(uene) + -id ³ + -ine ²

Example Sentences

Secondary azo-dyes from benzidine and tolidine containing two dissimilar amines, phenols, &c., introduced by Pfaff.

From Coal and What We Get from It by Meldola, Raphael

As already explained in connection with salicylic acid, this base and its homologue tolidine form tetrazo-salts, which combine with phenols and amines or their sulpho-acids.

From Coal and What We Get from It by Meldola, Raphael

Beginning of manufacture of cotton azo-dyes, and leading to the production of benzidine and tolidine on a large scale.

From Coal and What We Get from It by Meldola, Raphael

In addition to benzidine and tolidine, other diazotisable amido-compounds have of late years been pressed into the service of the colour-manufacturer.

From Coal and What We Get from It by Meldola, Raphael

Thus diazotised benzidine and tolidine combine with salicylic acid to form valuable yellow azo-dyes known as “chrysamines.”

From Coal and What We Get from It by Meldola, Raphael