toluidine

[ tuh-loo-i-deen, -din ]

/ təˈlu ɪˌdin, -dɪn /

noun Chemistry.

any of three isomeric amines having the formula C7H9N, derived from toluene: used in the dye and drug industries.

Nearby words

toluate, toluca, toluene, toluic, toluic acid, toluidine, toluidine blue o, toluol, toluyl, tolyatti, tolyl

Compare metatoluidine, ortho-toluidine, para-toluidine.

Origin of toluidine

First recorded in 1840–50; tolu(ene) + -id³ + -ine²

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for toluidine

The result is a diazo-salt; aniline, for example, giving diazobenzene chloride, and toluidine diazotoluene chloride.
Coal|Raphael Meldola
The large quantity of aniline and toluidine now made has opened up a channel for the use of the waste borings from cast-iron.
Coal|Raphael Meldola
The aniline selected for this purpose should contain about 25% of the toluidine.
Cooley's Practical Receipts, Volume II|Arnold Cooley
From this it will be evident that an aniline rich in toluidine is an essential condition for obtaining aniline red.
Cooley's Practical Receipts, Volume II|Arnold Cooley

By a similar process toluene is converted into nitrotoluene, and the latter into toluidine.
Coal|Raphael Meldola

British Dictionary definitions for toluidine

toluidine

/ (tɒˈljuːɪˌdiːn) /

noun

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

Word Origin for toluidine

C19: from tolu (ene) + -ide + -ine ²

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for toluidine

toluidine

[ tə-lōō′ĭ-dēn′ ]

Any of three isomeric compounds containing a benzene ring with a methyl (CH3) and amino (NH2) group attached to it. Toluidine is used to make dyes. Chemical formula: C7H9N.