1-butene is a colorless gas that belongs to the group of compounds known as alkenes. It has the chemical formula C₄H₈ and features a double bond between the first and second carbon atoms. This structure makes it an important building block in the production of various chemicals and plastics. As a member of the alkene family, 1-butene is used in the manufacture of polybutene, a polymer that finds applications in adhesives, sealants, and coatings. It can also be utilized in the synthesis of other organic compounds, making it valuable in the chemical industry.