Physical state at 20 °C :

Dissolved gas.

Colour   

Colourless gas.

Odour   

Garlic like. Poor warning properties at low concentrations.

Molecular weight

26

Melting point [°C] :

-80.8

Boiling point [°C] :

-84 (s)

Critical temperature [° C]:  

35

Vapour pressure [20°C] :

44 bar

Relative density, gas (air=1) :

0.9

Relative density, liquid (water=1) :

Not applicable

Solubility in water [mg/l] :

1185

Flammability range [vol% in air] :

2.34 to 83

Auto-ignition temperature [°C] :

325