Octane is a hydrocarbon that can be burned as a fuel. It's chemical formula is C8H18, and it is a colourless liquid at room temperature with a characteristic "gasoline" odour. Its principle use is as a component of gasoline, and the performance of this gasoline depends on its octane rating (which gets its name from this molecule, but is a little more complicated than just 'how much octane is there in the fuel). As is the case with other hydrocarbons, octane undergoes hydrocarbon combustion, combining with oxygen to form carbon dioxide. The balanced chemical equation for the complete combustion of octane is:
Below is a table of some of the basic properties of octane.
|Molar mass||114.23 grams/mole|
|Energy density||47.9 MJ/kg |