Formula: NiSO4 * 6 H2O Grade: ACS CAS No.: 10101-97-0 pH: 4.3 - 4.7 (100 g/l, H2O, 20°C) Solubility: 650 g/l (20°C) Melting Point: 53°C Molar Mass: 262.86 g/mol Bulk Density: 1000 kg/m3 Density: 2.07 g/cm3 (20°C) Hill Formula: NiO4S * 6 H2O