Difference between revisions of "Octane"
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(2,2,4-trimethyl-pentane is not the most branched (there are isomers of octane with octane rating > 100), and the name isooactane is wrong) |
DavidB4-bot (talk | contribs) (→top: Spelling, Grammar, and General Cleanup, typos fixed: innacurately → inaccurately) |
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| − | '''Octane''' is a [[hydrocarbon]] found in [[petroleum]]. It has eight linked carbon atoms which may form a straight chain, various branched chains, or, in the case of cyclooctane, a ring. The straight and branched varieties share the same chemical formula and are therefore structural isomers. One highly branched form, 2,2,4-trimethyl-pentane, | + | '''Octane''' is a [[hydrocarbon]] found in [[petroleum]]. It has eight linked carbon atoms which may form a straight chain, various branched chains, or, in the case of cyclooctane, a ring. The straight and branched varieties share the same chemical formula and are therefore structural isomers. One highly branched form, 2,2,4-trimethyl-pentane, inaccurately named isooctane (which would be 2-methyl-heptane), has excellent anti-knock properties when burned in an internal-combustion engine, and its properties are used to calibrate the Octane rating of motor fuels. Isooctane is rated 100 on the octane scale and n-heptane, a hydrocarbon with very poor anti-knock properties, is rated 0. |
[[Category:Organic Chemistry]] | [[Category:Organic Chemistry]] | ||
Revision as of 12:20, July 1, 2016
Octane is a hydrocarbon found in petroleum. It has eight linked carbon atoms which may form a straight chain, various branched chains, or, in the case of cyclooctane, a ring. The straight and branched varieties share the same chemical formula and are therefore structural isomers. One highly branched form, 2,2,4-trimethyl-pentane, inaccurately named isooctane (which would be 2-methyl-heptane), has excellent anti-knock properties when burned in an internal-combustion engine, and its properties are used to calibrate the Octane rating of motor fuels. Isooctane is rated 100 on the octane scale and n-heptane, a hydrocarbon with very poor anti-knock properties, is rated 0.