Basic Information Parameter Details CAS Number 110-16-7 Synonyms Cis-butenedioic acid, Maleinic acid Chemical Formula C₄H₄O₄ Molecular Weight 116.07 g/mol Physical State Colorless crystalline solid (monoclinic) Density 1.59 g/cm³ (20°C) Melting Point 130–135°C Boiling Point 275…