tolidine

[ tol-i-deen, -din ]

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.

tolidine

/ 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

Word History and Origins

Origin of tolidine¹

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

Word History and Origins

Origin of tolidine¹

C19: from 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

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

From Project Gutenberg

The nitro-derivatives of the ethers of phenol and cresol, when reduced in the same way that nitrobenzene and nitrotoluene are reduced to azobenzene and azotoluene, also furnish azo-compounds which, on further reduction, give bases analogous to benzidine and tolidine.

From Project Gutenberg

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

From Project Gutenberg