#Heptane is a component of natural gas and crude oil (0.1-1.9%). All isomers of heptane are used as #solvents for glues, lacquers and inks, as #industrial #solvent for extracting natural gas, in #organic #synthesis, as an anesthetic, and are ingredients of gasoline and #petroleum #solvents.
Pure #heptane has two main uses. The first use is as the standard zero point for the octane rating scale for gasoline. As a driver, you may have noticed that higher #octane fuel is more expensive because it is better for your engine. You can correctly conclude that a fuel rated zero #octane would be terrible for your car. Indeed, pure heptane with its zero #octane rating is a terrible fuel choice. The reason is that #heptane burns very explosively, which is the source of engine knocking.
