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Octane

Octane is an organic chemical, specifically an alkane, with formula C₈H₁₈. (8 carbon alkene). It is the major constituent of petrol (US:gasoline).

Octane ratings are ratings used to represent the anti-knock performance of petrol by giving the percentage of octane in an octane-heptane mixture that would have the same performance.

See also: cetane in diesel.

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Octane".