Tags: Chemical Compound, Chemical Substance.
Maleic acid or cis-butenedioic acid is an organic compound that is a dicarboxylic acid a molecule with two carboxyl groups. Its chemical formula is HO2CCHCHCO2H. Maleic acid is the cis-isomer of butenedioic acid whereas fumaric acid is the trans-isomer. It is mainly used as a precursor to fumaric acid and relative to its parent maleic anhydride maleic acid has few applications.