Heptane

  H H H H H H H
  | | | | | | |
H-C-C-C-C-C-C-C-H
  | | | | | | |
  H H H H H H H

  H H H H H H
  | | | | | |
H-C-C-C-C-C-C-H
  | | | | | |
  H | H H H H
  H-C-H
    |
    H

Hep"tane (?), n. [Gr. "epta` seven.] Chem.

Any one of several isometric hydrocarbons, C7H16, of the paraffin series (nine are possible, four are known); -- so called because the molecule has seven carbon atoms. Specifically, a colorless liquid, found as a constituent of petroleum, in the tar oil of cannel coal, etc.

© Webster 1913.