phthalic

POS

Adjective

HYPHEN

phthal=ic

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CIDE DICTIONARY

phthalic, a. [Naphthalene + -ic.].

Pertaining to, or designating, a dibasic acid obtained by the oxidation of naphthalene and allied substances. [1913 Webster]

Phthalic acid (Chem.), a white crystalline substance, C6H4.(CO2H)2, analogous to benzoic acid, and employed in the brilliant dyestuffs called the phthaleins.

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