Formula: MnSO4 * 4 H2O CAS No.: 10101-68-5 pH: 4.5 - 6.0 (50 g/l, H2O, 20°C) Solubility: (20°C) soluble Melting Point: 26 - 27°C Molar Mass: 223.06 g/mol Bulk Density: 1000 - 1200 kg/m3 Density: 2.11 g/cm3 (20°C) Hill Formula: MnO4S * 4 H2O