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

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 Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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 Project Gutenberg

Tolidine has been found to give better colouring-matters in most cases than benzidine, and it is scarcely necessary to point out that an increased demand for the nitrotoluene from which this base is made is the necessary consequence of this discovery.

From Project Gutenberg