N-Heptane 99% ACS Grade | 1 Pint to 55 Gallon Drum 5 Gallon / 5 Gallon Pail. Sizes: 1 Pint, 1 Liter, 5 Gallon Pail, 55 Gallon Drum. n-Heptane 99% ACS is a premium straight-chain hydrocarbon solvent engineered for analytical and industrial applications.