phthalic acid definition

  • noun:
    • A colorless crystalline natural acid, C6H4(COOH)2, prepared from naphthalene and used in the forming of dyes, perfumes, alongside organic substances.
    • any one of three isomeric fragrant organic dicarboxylic acids, C6H4(COOH)2; particularly the ortho- isomer manufactured from naphthalene, utilized in the forming of dyes, perfumes also substances.
    • a colorless acid accustomed make dyes and perfumes
  • adjective:
    • a white crystalline substance, C6H4.(CO2H)2, analogous to benzoic acid, and used in the brilliant dyestuffs called the phthaleins.

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