What is the Main Constituent of LPG?

Liquefied petroleum gas, or commonly referred to as LPG is a flammable mixture of hydrocarbon gases that are used as fuel in heating appliances and in vehicles. The LPG gases can be compressed into a liquid at relatively low pressures. The most common gases present in LPG include:

  • Propane
  • Butane
  • Isobutane
  • Ethane
  • Ethylene
  • Propylene
  • Butylene
  • Isobutylene

The percentage of propane and butane in LPG depends on where you are. For instance, LPG is just propane in the US and Australia. In New Zealand, LPG is a mix of propane and butane. The percentage is usually determined based on what is available on the supply side.

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