Liquefied petroleum gases such as propane and butane produced at refineries or at natural gas processing plants, including plants that fractionate raw natural gas plant liquids. (Acronym).

This is the general term used to describe the easily liquefiable gases contained in crude oil and natural gas - propane, butane, ethane, propylene and butylene.. LPG sold for fuel use is generally a mixture of two or more of these products.