Propane is a three-carbon alkane with the molecular formula C3H8. It is a gas at standard temperature and pressure, but can be compressed to a transportable liquid. Propane is a by-product of natural gas processing and petroleum refining. It is commonly used as a fuel in domestic and industrial applications, and in low-emissions public transportation. Propane is one of a group of liquefied petroleum gases (LP gases), which also includes butane, propylene, butadiene, butylene, isobutylene, and mixtures thereof.
Some key facts about propane include:
- It is nontoxic, colorless, and virtually odorless; an identifying odor is added so it can be detected.
- Propane is commonly used for space and water heating, for cooking, and as fuel for engine applications such as forklifts, farm irrigation engines, fleet vehicles, and buses.
- When used as vehicle fuel, propane is known as propane autogas.
- Propane has a high octane rating, making it an excellent choice for spark-ignited internal combustion engines.
- If spilled or released from a vehicle, propane presents no threat to soil, surface water, or groundwater.
- Propane is widely used in residences throughout the United States to fuel gas grills, for home heating and fireplaces, for efficient tankless water heating, boiler water and zone heating.
Propane is a versatile fuel that is useful in a wide variety of applications.
