Tags: Chemical Compound, Chemical Substance.

Phthalic acid is an aromatic dicarboxylic acid with formula C6H4(CO2H)2. It is an isomer of isophthalic acid and terephthalic acid. Although phthalic acid is of modest commercial importance the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale.

Phthalic-acid-2D-skeletal.png
IUPAC name
benzene-12-dicarboxylic acid

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