n-Heptane Manufacturer n-Pentane, CAS No. 109-66-0 by Manufacturers, Producers, Suppliers Dec 16, 2020 Pentane n-Pentane: CAS No. 109-66-0: specific gravity: 0.626: boiling point (℃) 36.1: flash point (℃) – 40: Purpose: solvent, cleaning agent, synthetic intermediate, extractant, low temperature thermometer, foaming agent of synthetic resin.