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Mainly used as an ingredient in car fuel.
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Octane is a hydrocarbon and an alkane with the chemical formula C8H18, and the condensed structural formula CH3(CH2)6CH3. Octane has many structural isomers that differ by the amount and location of branching in the carbon chain. One of these isomers,2,2,4-trimethylpentane (isooctane) is used as one of the standard values in the octane rating scale.Octane is a component of gasoline (petrol). As with all low molecular weight hydrocarbons, octane is volatile and very flammable.
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