2-乙基-1-己醇，分子式C₈H₁₈O。

无色有特殊气味液体。可燃。粘度：9.8 mPa·s（20°C）。 溶于约720倍的水，与醇、醚和氯仿等多数有机溶剂互溶。与水形成共沸混合物，其中水占20％，共沸点99.1°C。

2-Ethylhexanol (abbreviated 2-EH) is a branched, eight-carbon chiral alcohol. It is a colorless liquid that is poorly soluble in water but soluble in most organic solvents. It is produced on a massive scale for use in numerous applications such as solvents, flavors, and fragrances and especially as a precursor for production of other chemicals such as emollients and plasticizers. It is encountered in natural plant fragrances, and the odor has been reported as "heavy, earthy, and slightly floral" for the R enantiomer and "a light, sweet floral fragrance" for the S enantiomer.