N-Heptane 99% ACS Grade | 1 Pint to 55 Gallon Drum 1 Liter / 8 Liters. n-Heptane 99% ACS is a premium straight-chain hydrocarbon solvent engineered for analytical and industrial applications. Key Properties CAS Number: 142-82-5 UN Number: 1206 Specific Gravity: 0.684 Boiling Point: 98.4°C (209.1°F) Purity: ≥99.0% Residue after Evaporation: ≤0.001% Common Applications High-performance chromatographic analysis Precision laboratory extractions Professional cleaning and degreasing Advanced chemical s.