Synonyms: Ethanedioic acid Hill formula: C₂H₂O₄ * 2 H₂O Chemical formula: (COOH)₂ * 2 H₂O HS Code: 2917 11 00 EC number: 205-634-3 Molar mass: 126.07 g/mo EC index number: 607-006-00-8 CAS number: 6153-56-6