The Heptane reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Heptane

Heptane is an organic chemical, specifically an alkane, with formula C₇H₁₆. It is a minor constituent of petrol (US:gasoline). It is considered undesirable, because it burns in a way that often causes engine knocking, as opposed to octane, which delivers better performance. Heptane has nine isomers.

This is the "Heptane" reference article from the English Wikipedia. All text is available under the terms of the GNU Free Documentation License. See also our Disclaimer.