1-Octene is an organic compound with a formula CH2CHC6H13. The alkene is classified as a higher olefin and alpha-olefin, meaning that the double bond is located at the alpha (primary) position, endowing this compound with higher reactivity and thus useful chemical properties. 1-
Octene is one of the important linear alpha olefins in industry. It is a colourless liquid. The main use of 1-octene is as a comonomer in production of polyethylene. High-density polyethylene (HDPE) and linear low-density polyethylene (LLDPE) use approximately 2–4% and 8–10% of comonomers, respectively.
Another significant use of 1-octene is for production of linear aldehyde via the oxo synthesis (hydroformylation) to give the C9 aldehyde (nonanal).
Oxidation of this aldehyde gives the short-chain fatty acid nonanoic acid. Hydrogenation of the same aldehyde gives the fatty alcohol 1-nonanol, which is used as a plasticizer.