1.1 Difluoroemethane (HFC-152a)

1.SPECIFICATION1.1Physical Properties:At normal temperature and pressure, HFC-152a is a colourless gas.Molecular weight: 66.1Boiling point under 101300Pa: -24.7Density of liquid at 20, kg.dm-3 0.90Vapor pressure at 25, MPa 0.618Critical temperature, 113.5Critical pressure, MPa 4.58Critical density, kg.dm-3 0.365Latent heat of vapourisation at Bp., KJKg-1 324.2Solubility at25HFC-152a in water, % by wt 0.3Water in HFC-152a, % by wt 0.17Thermal conductivity at 25Liquid, W.m-1.-1 0.0113ODP:Limited flammability (with air), %(V/V) 5.1-17.1Commercial Specification (ISO7201):Purity, %, min 99.8 99.95Moisture content ppm, max 20 202.USESAs refrigerant, blowing agent, aerosol propellent and cleanning agent.

1.1 Difluoroemethane (HFC-152a) product, offered by Zhejiang Chem-tech Group Co., Ltd.