Methane - CH4

Methane is a colourless gas with no significant smell. It is the most important component in natural gas. Methane is used in calibration gas mixtures for petrochemical industry environmental emissions monitoring.

Major hazards are fire and high pressure.


  • Molecular weight:

    16.034 g/mol

  • Gaseous phase:

    Gas density (1.013 bar at boiling point): 1.816 kg/m3
    Gas density (1.013 bar and 15 °C (59 °F)): 0.6797 kg/m3

  • Liquid phase:

    Boiling point (1.013 bar): -161.48 °C
    Liquid density (1.013 bar at boiling point): 422.36 kg/m3

  • Critical point:

    Critical temperature: -82.59 °C
    Critical pressure: 45.99 bar
    Critical density: 162.7 kg/m3