heptane heptane


  • (n) a colorless volatile highly flammable liquid obtained from petroleum and used as an anesthetic or a solvent or in determining octane ratings


  1. According to the announcement, the committee proceeded by selecting two chemicals, one knock-preventing (iso-octane), one knock-producing (normal heptane).
  2. An identical motor is then run on various mixtures of 1) heptane (a bad knocker) and 2) isooctane (once thought to be the perfect knockless fuel) until its knocking corresponds .
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tangible tangible
/ˈtæn dʒə bəl /