CAS No.: 109-78-4 pH: 3.0 - 4.5 (H2O, 20°C) (undiluted) Solubility: 1000 g/l (20°C) Melting Point: -46°C Molar Mass: 71.08 g/mol Boiling Point: 228°C (1013 hPa) Vapor Pressure: Flash Point: 128°C DIN 51758 Refractive Index: 128°C DIN 51758 Density: 1.05 g/cm3 (20°C)