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单词 phthalic acid
释义

WordReference Random House Unabridged Dictionary of American English © 2024
phthal′ic ac′id, 
    1. Chemistryany 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. ChemistrySee isophthalic acid. 
    3. ChemistrySee terephthalic acid. 
    • 1855–60

Collins Concise English Dictionary © HarperCollins Publishers::
phthalic acid /ˈθælɪk ˈfθæl-/ n
  1. a soluble colourless crystalline acid used in the synthesis of dyes and perfumes; 1,2-benzenedicarboxylic acid. Formula: C6H4(COOH)2
Etymology: 19th Century phthalic, from phthal- (see phthalein) + -ic
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更新时间：2025/11/11 12:10:33