Maleic anhydride, min. 99,5 %, for synthesis, Molar mass (M) 98,06 g/mol, Density (D) 1,48 g/cm³, Flash point (flp) 103 °C, Boiling point (bp) 200,1 °C, CAS No. [108-31-6], UN-Nr. 2215, EG-Nr. 203-571-6, Empirical formula C4H2O3