Density: 0.62g/cm3
Melting point: -108.9℃
Boiling point: -4.4℃
Flash point: -76℃
Refractive index: 1.429
Critical temperature: 161.8℃ [3]
Critical pressure: 4.33MPa [3]
Upper explosion limit (V/V) : 16.3% [3]
Lower explosive limit (V/V) : 1.1% [3]
Ignition temperature: 415℃ [3]
Saturated vapor pressure: 245.27kPa (21℃) [3]
Appearance: Slightly aromatic colorless gas
Solubility: insoluble in water, soluble in acetone, benzene, acetic acid, ester and other organic solvents