toluidine

American  

[tuh-loo-i-deen, -din] / təˈlu ɪˌdin, -dɪn /

noun

Chemistry.

1. any of three isomeric amines having the formula C 7 H 9 N, derived from toluene: used in the dye and drug industries.

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toluidine British  

/ tɒˈljuːɪˌdiːn /

noun

1. an amine derived from toluene existing in three isomeric forms; aminotoluene. The ortho- and meta- isomers are liquids and the para- isomer is a crystalline solid. All three are used in making dyes. Formula: C 6 H 4 CH 3 NH 2

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toluidine Scientific  

/ tə-lo̅o̅′ĭ-dēn′ /

1. Any of three isomeric compounds containing a benzene ring with a methyl (CH ₃) and amino (NH ₂) group attached to it. Toluidine is used to make dyes. Chemical formula: C ₇ H ₉ N.

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Etymology

Origin of toluidine

First recorded in 1840–50; tolu(ene) + -id ³ + -ine ²

Example Sentences

Plates were incubated for 4days, then fixed with 4% formal saline and counterstained with toluidine blue for plaque counting.

From Nature • Apr. 4, 2014

They used two drugs which worked equally well: toluidine blue, a tissue stain, and protamine sulfate, a protein compound.

From Time Magazine Archive

These amido compounds, of which aniline, toluidine, benzidine, naphthylamine are familiar examples, are characterised by containing the molecular group NH2, which radicle is built up of the two elements nitrogen and hydrogen.

From The Dyeing of Cotton Fabrics A Practical Handbook for the Dyer and Student by Beech, Franklin

The large quantity of aniline and toluidine now made has opened up a channel for the use of the waste borings from cast-iron.

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

Disulpho-acids of beta-naphthol introduced by Meister, Lucius, and Brüning, leading to azo-dyes from aniline, toluidine, xylidine, and cumidine.

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