phthalic acid

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phthalic acid

n.
The colorless crystalline ortho-isomer of benzene dicarboxylic acid, C8H6O2, used in the synthesis of dyes, perfumes, and other organic compounds.
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.

phthalic acid

(ˈθælɪk; ˈfθæl-)
n
(Elements & Compounds) a soluble colourless crystalline acid used in the synthesis of dyes and perfumes; 1,2-benzenedicarboxylic acid. Formula: C6H4(COOH)2
[C19 phthalic, from phthal- (see phthalein) +-ic]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

phthal′ic ac′id


n.
any of three colorless, crystalline, isomeric acids having the formula C8H6O4, used chiefly in the manufacture of dyes, medicine, and perfume.
[1855–60]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.phthalic acid - a colorless acid used to make dyes and perfumes
acid - any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
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Translations
Phthalsäure
References in periodicals archive ?
According to the number of carboxylic groups, the BCAs can be classified into 6 benzoic acids, 8 phthalic acids, 7 benzenetricarboxylic acids, 6 benzenetetracarboxylic acids, 3 benzenepentacarboxylic acids, and 1 benzenehexacarboxylic acid.
Under the hood of modern automobiles, where long-term stability at 150[degrees]C is desired, the semiaromatic polyamides, mostly polyphthalamides of aliphatic diamines and phthalic acids, compete with metals.
For instance, in the series of phthalic acids (o-, m-, and p-forms) it can be seen that the CsCA value is highest in the case of o-phthalic acid, for which the [Cs.sup.+]-bidentate-type complex is also the strongest.