CAS: 109-99-9 EC No: 203-726-8 MDL No: MFCD00005356 RTECS: LU5950000 UN No: UN2056; Haz Class: 3; Packing Group: II Liquid Molecular Formula: C₄H₈O MW: 72.11 Melting Point: -108° Boiling Point: 65-67° Flash Point: -17°C (1°F) …