a white, crystalline, slightly water-soluble solid, C8H4O3, used chiefly in the manufacture of dyes, alkyd resins, and plasticizers.
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Origin of phthalic anhydride
First recorded in 1850–55
Words nearby phthalic anhydride
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for phthalic anhydride
a white crystalline substance used mainly in producing dyestuffs. Formula: C 6 H 4 (CO) 2 O
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for phthalic anhydride
A white crystalline compound prepared by oxidizing naphthalene and used in the manufacture of phthaleins and other dyes.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for 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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.