| Section2 = | Section7 =,,,, | SPhrases =,,,,,,, | FlashPt = −4 °C | Autoignition = 285 °C }} | Section8 = }} n-Heptane is the straight-chain alkane with the chemical formula H3C(CH2)5CH3 or C7H16. It is the zero point of the octane rating scale. Uses Heptane (and its many isomers) is widely applied in laboratories as a totally non-polar solvent. A liquid, it's ideal for transport and storage. In the grease spot test, heptane is used to dissolve the oil spot to show the pre… (More on Heptane)