isophthalic acid


isophthalic acid

[¦ī·sō¦thal·ik ′as·əd] (organic chemistry) C6H4(COOH)2 Colorless crystals subliming at 345°C; slightly soluble in water, soluble in alcohol and acetic acid, and insoluble in benzene; used as an intermediate for polyester and polyurethane resins, and as a plasticizer. Also known as meta-phthalic acid.