ALL meanings of orthophthalic acid
or·tho·phthal·ic ac·id
O o - noun orthophthalic acid Chemistry. any of three isomeric acids having the formula C 8 H 6 O 4 , especially the ortho isomer (orthophthalic acid) a colorless, crystalline, slightly water-soluble solid used chiefly in the manufacture of dyes, medicine, and perfume. 1
- noun orthophthalic acid isophthalic acid. 1
- noun orthophthalic acid terephthalic acid. 1