Propylene, also known as propene, is a colorless gas that is part of the alkene family of hydrocarbons. It has the chemical formula C3H6 and is produced primarily through the refining of crude oil and natural gas processing. Propylene is an important building block in the production of various chemicals and plastics, including polypropylene, which is widely used in packaging, textiles, and automotive parts. In addition to its role in manufacturing, propylene is also used as a fuel and a refrigerant. It can be found in some household products, such as adhesives and paints. Due to its versatility, propylene plays a significant role in the global chemical industry.