heptane

(heptān′)

noun

an alkane, CH, existing in several isomeric forms: the normal isomer is used in standard mixtures to test octane ratings

Origin: hept(a)- + -ane

See heptane in American Heritage Dictionary 4

noun
A volatile, colorless, highly flammable liquid hydrocarbon, C7H16, obtained in the fractional distillation of petroleum and used as a standard in determining octane ratings, as an anesthetic, and as a solvent.

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