Components of Natural Gas

Chemical composition of natural gas

Natural gas is 95 percent Methane (CH4

Plus four other hydrocarbons:

Ethane (C2H6) - 2.5%, Propane (C3H8) - 0.2%, Butane (C4H10) - 0.06%, Pentanes Plus (C5H12 + C10H22) - 0.02%

It also contains small amounts of:

Nitrogen (N2) - 1.6%, Carbon Dioxide (CO2) - 0.7%, Hydrogen Sulphide (H2S) - trace, Water (H2O) - trace

Properties of Natural Gas

Natural gas is:

  • Lighter than air
  • Highly combustible
  • Clean burning
  • Efficient
  • Abundant
  • Odourless and invisible (An odourant, called mercaptan, is added to natural gas to make even the smallest leak easy to smell)
  • Non-absorbing
  • Non-corrosive
  • Explosive under pressure

For more information on natural gas, visit the Canadian Gas Association.

To learn more about the physical properties of natural gas, download our Material Safety Data Sheet (MSDS):