Octadecene is a long-chain hydrocarbon and an alkene with the molecular formula C18H36. There are multiple structural isomers of octadecene, depending on the position of the double bond. 1-Octadecene, an alpha-olefin, is a relatively inexpensive solvent, with a boiling point of 315 °C. It is compatible with oleic acid.

生產方法
由十八醇脫水而得。將十八醇和乙酐(摩爾比為1:1 該品為氣相色譜對比樣品,在有機合成中用于生產表面活性劑、香料、芭物、染料和聚合物。
用途
該品為氣相色譜對比樣品,在有機合成中用于生產表面活性劑、香料、芭物、染料和聚合物。