Olefiant gas is a chemical compound also known as ethylene or ethene, which is a colorless and flammable gas. It is widely used in the industrial sector as a building block for the production of a variety of substances, including plastics, solvents, and synthetic rubbers. Other synonyms for olefiant gas include vinylene, ethene, and unsaturated hydrocarbon. The gas is also commonly called ethylene in the United States. Ethene is an essential component of the petroleum industry and is commonly used in industrial applications, including welding and cutting. Despite its many uses, olefiant gas can be hazardous when not handled correctly and should be treated with caution.