Solvent, thinner, in determination of fuel octane numbers2,2,4-Trimethylpentane is used as a solvent in spectrophotometric analysis and organic synthesis. Due to its high antiknock octane number, it is widely employed as a standard reference fuel for octane ratings. It acts as an entrainer in azeotropic distillation as well as a thinner. It is involved as a processing aid in the petroleum industry.

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