癸烷是化学式为CH₃(CH₂)₈CH₃的烷烃，有75个异构体， 全都是可燃液体。癸烷是汽油的组分之一。与其他烷烃类似，癸烷是非极性分子，不易溶于水之类的极性溶剂中。

癸烷具有烷烃的通性，可发生燃烧反应，氧气充足时生成二氧化碳和水。

2C₁₀H₂₂ + 31O₂ → 20CO₂ + 22H₂O

氧气不充足时则会生成一氧化碳：

2C₁₀H₂₂ + 21O₂ → 20CO + 22H₂O

Decane is an alkane hydrocarbon with the chemical formula C₁₀H₂₂. Although, 75 structural isomers are possible for decane, the term usually refers to the normal-decane ("n-decane"), with the formula CH₃(CH₂)₈CH₃. All isomers, however, exhibit similar properties and little attention is paid to the composition. These isomers are flammable liquids. Decane is a component of gasoline (petrol) and kerosene. Like other alkanes, it is nonpolar solvent, does not dissolve in water, and is readily combustable. Although it is a component of fuels, it is of little importance as a chemical feedstock, unlike a handful of other alkanes.