UN No.: UN3453 pH: 2 (33 g/l, H2O, 20°C) Solubility: (20°C) soluble,Hydrolysis Melting Point: 200 - 250°C Bulk Density: 1000 kg/m3 Boiling Point: 600°C (1013 hPa) Vapor Pressure: Density: 2.0 g/cm3 (20°C)