LPG.

Liquefied Petroleum Gas.

Liquefied petroleum gas (LPG ) is a clean-burning hydrocarbon gas in liquid form that may be Propane or Butane or a mixture of the two. It is a very versatile fuel, extensively used for space heating, cooking and catering, refrigeration, caravans, homes on metered estates, BBQs, industrial processes and heating, powering fork-lift trucks and vehicles, farming applications and, in its purest form, as an aerosol propellant.

LPG is produced as a by-product in oil refining and is also extracted from naturally-occurring sources. It exists as a gas at normal atmospheric pressure, taking liquid form only at very low temperatures or when put under further pressure.