1,1-Dichloro-1-fluoroethane Alias: 1,1-Dichloro-1-fluoroethane | 1,1-Dichlorofluoroethane | Monochlorodifluoroethane | Freon-141b | 1,1-Dichlorofluoroethane English Name: 1,1-Dichloro-1-fluoroethane CAS Number: 1717-00-6 EINECS: 404-080-1 Molecular Formula: C?H?Cl?F Molecular Weight: 116.950 Density: 1.3±0.1 g/cm3 Boiling Point: 35.5±8.0 °C Melting Point: -104°C Flash Point: -33.4±11.9 °C Appearance: Colorless liquid with a faint ether-like odor Uses: 1. Used as a cleaning agent and polyurethane foaming agent. 2. This product can replace CFC-11 as a foaming agent for rigid polyurethane foam and replace CFC-113 as a cleaning agent.