Dictionary
i'so•phthal'ic ac'id
Pronunciation: (ī'su-thal'ik, ī"su-), [key] Chem.
a colorless, crystalline, slightly water-soluble solid, C
8H
6O
2, the meta isomer of phthalic acid: used chiefly in the manufacture of resins and plasticizers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.