−103.7 °C (169.5 K, -154.7 °F)

3.5 mg/100 mL (17 °C) ; 2.9 mg/L in water

4.22 mg/L in ethanol

good in diethyl ether

1.178 kg/m³ at 15 °C, gas

−169.2 °C (104.0 K, -272.6 °F)

282.4 K (9.2 °C)
at 5.04 MPa (50 atm)

+52.47 kJ/mol

colorless gas

542.8 °C

219.32 J·K⁻¹·mol⁻¹

44

-136 °C