释义 |
phthalic acid \ˈthalik-, ˈthālik-\ noun Etymology: phthalic International Scientific Vocabulary, short for naphthalic (in naphthalic acid) : any of three isomeric dicarboxylic acids C6H4(COOH)2 obtained by oxidation of various benzene derivatives: a. : a crystalline acid made usually by hydration of phthalic anhydride that regenerates the anhydride on heating and is used chiefly in making esters, benzoic acid, dyes, and intermediates; ortho-benzene-dicarboxylic acid b. : isophthalic acid c. : terephthalic acid |