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

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

When these are reduced by acid reducing-agents, they become converted into diamido-bases which are known as benzidine and tolidine respectively.

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

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