Phthalic-anhydride



noun, Chemistry.
1.
a white, crystalline, slightly water-soluble solid, C 8 H 4 O 3 , used chiefly in the manufacture of dyes, alkyd resins, and plasticizers.
noun
1.
a white crystalline substance used mainly in producing dyestuffs. Formula: C6H4(CO)2O

phthalic anhydride n.
A white crystalline compound prepared by oxidizing naphthalene and used in the manufacture of phthaleins and other dyes.
phthalic anhydride
A white crystalline compound prepared by oxidizing naphthalene and used in the manufacture of phthaleins and other dyes, resins, plasticizers, and insecticides. Chemical formula: C8H4O3.

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