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Related to Toluidines: M-toluidine, 4-methylaniline


Any of three isomeric compounds, C7H9N, used to make dyes.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(tɒˈljuːɪˌdiːn) or


(Elements & Compounds) 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: C6H4CH3NH2
[C19: from tolu(ene) + -ide + -ine2]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(təˈlu ɪˌdin, -dɪn)

any of three isomeric amines having the formula C7H9N, derived from toluene: used in the manufacture of dyes and drugs.
[1840–50; tolu (ene) + -idine]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Pigments offered: Blacks (Carbons); Blues (Phthalos and Ultramarine); Greens (Phthalos); Iron Oxides (Red, Yellow, Black, Brown; transparent and opaque); Reds (Naphthols, DPPs, Bariums, and Toluidines); Yellows (Hansas Diarylides, Bismuth Vandates, and Benzimidazolone); Oranges (DNAs, Dianisidine, Diarylides); Whites (Titaniums); Violets (Quinacridones, Carbizoles, Methyls)
Types of pigments: Blacks (carbon black); Blues (phthalo, indanthrene, milori); Corrosion inhibiting (zinc phosphate, zinc chromate); Greens (phylo, chromium oxide); Iron oxide pigments (synthetic micronized and nonmicronized zinc ferrite) Metallic pigments (aluminum); Reds (high performance, naphthol, toluidine, azo, quinacridone, perylene, DPP)
These cover major chemistries such as azos, benzimidazolones, perylenes, naphthols, quinacridones, DNA, toluidines, phthalos, anthraquinones, etc.