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phthalic |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Phthalic \Phthal"ic\, a. [Naphthalene + -ic.] (Chem.) Pertaining to or designating, a dibasic acid obtained by the oxidation of naphthalene and allied substances. {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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