CAS Number: 143-33-9 UN Number: UN1689 Solubility: 370 g/l (20°C) Melting Point: 563°C Molar Mass: 49.01 g/mol Bulk Density: 750 - 900 kg/m3 Boiling Point: 1496°C (1013 hPa) Vapor Pressure: (20°C) Density: 1.6 g/cm3 (20°C) pH: 11.7 (100 g/l, H2O, 20°C)