![]() N-Heptane is the zero point of the octane rating scale. Heptane is commercially available as the rubber cement solvent "Bestine" and the outdoor stove fuel "Powerfuel" by Primus. However, iodine turns purple when dissolved in heptane, whereas the bromine solution remains brown. In water, both bromine and iodine appear brown. This is done by shaking the stained paper in a heptane solution for about half a minute.Įxtraction into heptane is a means by which aqueous bromine may be distingiushed from aqueous iodine. In the grease spot test, heptane is used to dissolve the oil spot to show the previous presence of organic compounds on a stained paper. A liquid, it is ideal for transport and storage. Heptane (and its many isomers) is widely applied in laboratories as a totally non-polar solvent. It is the zero point of the octaneĬyclohexane Molecule using Jsmol see - ForģD Structures Structure of the Heptane Molecule N-Heptane is the straight-chain alkane with the chemical formula H 3C(CH 2) 5CH 3 or C 7H 16.
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