Sizes: 1 Pint, 1 Quart, 5 Gallon, 55 Gallon Drum. n-Heptane 99% Technical | Extraction & Degreasing Solvent 1 Quart / 1 Quart. Concentration: 99% Technical Grade (C7H16). n-Heptane 99% Technical is a clear, colorless, and highly flammable organic solvent.