Hexane or n-hexane is an alkane, containing six carbon atoms, with the chemical formula C6H14.



Hexane will burn in air when ignited:

C6H14 + 19/2 O2 → 6 CO2 + 7 H2O + heat

Hexane will react with bromine under UV light to yield bromohexane.


Hexane is a colorless liquid, with a petrolic odor. It is insoluble in water, but miscible with many other solvents. It has a melting point of −95.3 °C and a boiling point of 68.7 °C. Hexane has considerable vapor pressure at room temperature (121.26 mmHg). It has a density of 0.6548 g/ml. Hexane is flammable, with a flash point of −26.0 °C and an autoignition temperature of 234.0 °C.


Certain lighter fluids contain n-hexane.


Hexane can be extracted by fractual distillation of gasoline, though this process is intense and time-consuming.


  • Extract oils from plants
  • Chemical reaction medium for organometallic reactions
  • N-buthyllithium storage



Hexane is irritant to the nose and eyes. The acute toxicity of n-hexane is rather low, however it can be metabolized by the organism to hexane-2,5-dione which is toxic. Long term exposure poses a health hazard.


Hexane must be stored in closed bottles, away from any heat or light source. Due to its high vapor pressure, it's mandatory to keep the bottle open or semi-open after being moved from a cold area to a warmer one, to prevent a dangerous build-up of pressure.


Hexane can be safely burned.


Relevant Sciencemadness threadsEdit

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