R141b is used as cleanser and foamer, can replace R11 and R113. Physical Property of HCFC-141b:(1)Critical Temperature, °C 204.15Critical Pressure, MPa 4.25Specific Heat of Liquid, 30°C, [KJ/(kg•°C)] 1.16ODP 0.11GWP 630 Technical specification of HCFC-141b:(2)Purity, % ≥99.8Moisture, PPM ≤30Acidity (as HCl), PPM ≤1Vapor Residue, PPM ≤100 R141b