n-Heptane Uses in the Lab and Industry
n-Heptane Uses in the Lab and Industry
n-Heptane is a straight-chain alkane (C7H16) that labs and manufacturers use as a non-polar solvent. This guide covers what n-heptane is, how laboratories use it, and where it fits in industry.
What Is n-Heptane, and How Is It Used?
n-Heptane Description
n-Heptane is a non-polar, straight-chain alkane with a gasoline-like odor. It is practically insoluble in water and dissolves oils and other non-polar substances.
These properties make n-heptane useful in industrial cleaning, degreasing, and extraction applications. n-Heptane is produced by refining petroleum streams.
Laboratory Uses of n-Heptane
Laboratories use n-heptane as a non-polar solvent in analytical and chemical separation procedures, including chromatography.
Researchers have evaluated heptane as an alternative to hexane in HPLC methods for separating and quantifying vitamin E compounds in food samples.
Heptane can also be used to tell bromine and iodine apart in aqueous solutions. After extraction into heptane, iodine gives a purple organic layer, while bromine gives a yellow-orange to orange organic layer.
n-Heptane in Octane Testing
n-Heptane is a primary reference fuel in anti-knock (octane) test engines.
On the conventional 0 to 100 octane scale, n-heptane is 0 and isooctane is 100. A fuel’s octane number is the percentage of isooctane, by volume, in an isooctane and n-heptane blend that matches the fuel’s knock resistance in a standard test engine. It is not the percentage of heptane.
Commercial mixed-heptane solvents, which differ in composition from pure n-heptane, are also used in coatings and adhesives.
n-Heptane is also used in extraction processes and in electronics and industrial cleaning.
Conclusion
n-Heptane is a non-polar solvent used in laboratory work such as chromatography, as the zero-point reference fuel in octane testing, and in industrial cleaning and manufacturing. If you need n-heptane for your lab or plant, request a quote or call (877) 224-5641. SDS and COA are available upon request.