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TAKE THE QUIZ“phthalic”
The following 2 entries include the term phthalic.
phthalic acid
noun: any of three isomeric acids C8H6O4 obtained by oxidation of various benzene derivatives
phthalic anhydride
noun: a crystalline cyclic acid anhydride C8H4O3 used especially in making alkyd resins
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Merriam-Webster unabridged