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

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

Mix 1 c.cm. of the tolidine reagent with 100 c.cms. of the sample in a Nessler tube and allow the solution to stand at least five minutes.

From Chlorination of Water by Race, Joseph

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

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

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