The molecular formula C8H18O2 (molar mass: 146.22 g/mol) may refer to:
- Di-tert-butyl peroxide
- 2,2-Diethyl-1,4-butanediol
- Etohexadiol, an ectoparasiticide
- 2-Hexoxyethanol
- MC-2973
- Octanediols
The molecular formula C8H18O2 (molar mass: 146.22 g/mol) may refer to: