It is an important component of gasoline, frequently used in relatively large proportions (around 10%) to increase the knock resistance of fuel.

Strictly speaking, if the standard meaning of "iso" is followed, the name isooctane should be reserved for the isomer 2-methylheptane. However, 2,2,4-trimethylpentane is by far the most important isomer of octane and historically it has been assigned this name.

Production

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