Propane is an organic chemical compound, normally a gas at standard conditions, but compressible to a transportable liquid. It has the chemical formula C3H8.
In the presence of excess oxygen, propane burns to form water and carbon dioxide, releasing large amounts of heat.
- C3H8 + 5 O2 → 3 CO2 + 4 H2O + heat
Propane is a colorless, odorless gas at standard conditions. It boils at around −42°C and freezes at −187.7 °C.
Propane is available in LPG tanks, usually mixed with other alkanes or alkenes and thiols. This combination is generally used for gas grills.
Propane can be prepared by heating a mixture of sodium butyrate and sodium hydroxide.
- Make propene
- Make nitromethane
Propane is nontoxic, but may pose asphyxiation risk through oxygen deprivation if inhaled. When compressed propane is released, the gas expands and cools, presenting a frostbite hazard.
Liquified propane should be stored away from heat sources.
Propane can be burned safely, as it will not release toxic byproducts.