toluidine

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

/ təˈlu ɪˌdin, -dɪn /

Save This Word!

noun Chemistry.

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

QUIZ

WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?

Smoothly step over to these common grammar mistakes that trip many people up. Good luck!

Question 1 of 7

Fill in the blank: I can’t figure out _____ gave me this gift.

who

whom

TAKE THE QUIZ TO FIND OUT

Compare metatoluidine, ortho-toluidine, para-toluidine.

Origin of toluidine

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

Words nearby toluidine

toluate, Toluca, toluene, toluic, toluic acid, toluidine, toluol, toluyl, Tolyatti, tolyl, tolyl group

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use toluidine in a sentence

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
It was because he was working with impure chemicals, with aniline containing a little toluidine, that he discovered mauve.
Creative Chemistry|Edwin E. Slosson
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

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

Scientific 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.