phthalic anhydride

noun

Definition of phthalic anhydride

: a crystalline cyclic acid anhydride C₈H₄O₃ used especially in making alkyd resins

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The first known use of phthalic anhydride was in 1855

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phthalic anhydride

noun

Medical Definition of phthalic anhydride

: a crystalline cyclic acid anhydride C₈H₄O₃ that is used especially in making alkyd resins and is a structural part of thalidomide

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