Used primarily as a reference standard in determining octane ratings for gasoline, isooctane serves as the 100-point benchmark in the octane scale due to its excellent anti-knock properties. It is blended into automotive fuels to improve combustion efficiency and reduce engine knocking. Also employed as a solvent in laboratories, particularly in analytical chemistry for sample preparation and extraction processes. Its low reactivity and high purity make it suitable for use in calibration of fuel testing equipment and in environmental testing for hydrocarbon analysis. Additionally, it finds use in some specialty cleaning applications and as a carrier solvent in aerosol formulations.