LPG storage tank

Liquefied petroleum gas is a mixture of propane and butane, usually accompanied by a small amount of propylene and butene. Ethyl mercaptan, a strong odorant, is usually added so that leakage of LPG can be easily detected. Liquefied petroleum gas is produced when crude oil is refined, or gas that is volatile from the extraction of oil or natural gas. Liquefied petroleum gas (LPG) is often mistaken for propane. In fact, LPG is a mixture of oil and natural gas formed under appropriate pressure and exists as a liquid at room temperature. In the United States and Canada, the mixture of these two substances is generally considered to be mainly composed of propane, while in many European countries the propane content in LPG is only 50% or less.