Heptane is a colorless liquid with a gasoline-like odor. Heptane is used as a solvent in adhesives, aerosol cleaners and solvent extraction of vegetable oils and essential oils. Heptane is a component of gasoline.
In many applications (especially pharmaceutical), the use of n-hexane is being replaced by n-heptane, which will not form the toxic (hexane-2,5-dione) metabolite.