{Phthalic acid} (Chem.), a white crystalline substance, {C6H4.(CO2H)2}, analogous to benzoic acid, and employed in the brilliant dyestuffs called the phthaleins. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
Phthalic acid — Phthalic acid … Wikipedia
phthalic acid — [thal′ik, fthal′ik as′id] n. [(NA)PHTHAL(ENE) + IC] any of three isomeric acids, C6H4 (COOH) 2, esp. one ( ortho phthalic acid) obtained by oxidation of naphthalene or xylene and used in the manufacture of dyes, medicines, etc … English World dictionary
phthalic acid — ftalio rūgštis statusas T sritis chemija formulė C₆H₄(COOH)₂ atitikmenys: angl. phthalic acid rus. фталевая кислота ryšiai: sinonimas – 1,2 benzendikarboksirūgštis … Chemijos terminų aiškinamasis žodynas
phthalic acid — 1. Chem. any of three isomeric acids having the formula C8H6O4, esp. the ortho isomer (orthophthalic acid), a colorless, crystalline, slightly water soluble solid used chiefly in the manufacture of dyes, medicine, and perfume. 2. See isophthalic… … Universalium
phthalic acid — o Benzenedicarboxylic acid. * * * phthal·ic acid .thal ik n any of three isomeric acids C8H6O4 obtained by oxidation of various benzene derivatives * * * phthal·ic ac·id (thalґik) any of the isomers, but usually the ortho isomer, of the… … Medical dictionary
phthalic acid — [ (f)θalɪk] noun Chemistry a crystalline acid derived from benzene, with two carboxylic acid groups attached to the benzene ring. Origin C19: shortening of naphthalic (see naphthalene) … English new terms dictionary
phthalic acid — noun Etymology: International Scientific Vocabulary, short for obsolete naphthalic acid, from naphthalene Date: 1857 any of three isomeric acids C8H6O4 obtained by oxidation of various benzene derivatives … New Collegiate Dictionary
phthalic acid — noun Any of three isomeric aromatic organic dicarboxylic acids, CH(COOH); especially the ortho isomer manufactured from naphthalene, used in the synthesis of dyes, perfumes and other compounds … Wiktionary
phthalic acid — phthal′ic ac′id n. chem. any of three colorless, crystalline, isomeric acids having the formula C8H6O4, used chiefly in the manufacture of dyes, medicine, and perfume • Etymology: 1855–60 … From formal English to slang
phthalic acid — n. Chem. one of three isomeric dicarboxylic acids derived from benzene. Derivatives: phthalate n. Etymology: abbr. of NAPHTHALIC: see NAPHTHALENE … Useful english dictionary
