What is propane?

Propane (also called LPG-liquefied petroleum gas-or LP gas) is a widely used fuel. It is transported and stored as a very cold liquid, and can cause a "freeze burn" or frostbite if it contacts the skin. The liquid propane is turned into a gas inside a tank or cylinder. In its natural form, propane is colorless and odorless. To make propane easier to detect in the event of a leak or spill, manufacturers deliberately add a chemical compound to give it a distinctive smell.

Propane is flammable when mixed with air (oxygen) and can be ignited by many sources, including open flames, smoking materials, electrical sparks, and static electricity.

Propane vapors are heavier than air. For this reason, they may accumulate in low-lying areas such as basements, crawl spaces, and ditches, or along floors. However, air currents can sometime s carry propane vapors elsewhere within a building.