Heptane is used to dissolve or remove waxes/lipids during the extraction process. Because heptane is nonpolar it is a good solvent for extraction. Heptane’s boiling point is around 209°F, so it is important to properly purge the heptane before consumption. When processing plant material the first step is to dry it out and then soak it in the solvent until it dissolves. Then the extract can be collected from the solvent. Next is the purging process, because hexane is not pressurized the purging process may take longer than using ethanol denatured with hexane. But using heptane as a solvent has its benefits. It creates a more potent and flavorful botanical oil.