CAS Number: 74-95-3 UN Number: UN2664 Solubility: 11.7 g/l (15°C) Melting Point: -52.7°C Molar Mass: 173.83 g/mol Boiling Point: 95 - 97°C (1013 hPa) Vapor Pressure: 44 hPa (20°C) Refractive Index: 1.5419 (20°C, 589 nm) Density: 2.49 g/cm3 (20°C)