1.1 Difluoroemethane (HFC-152a)

Product Description
1. SPECIFICATION
1. 1Physical Properties:
At normal temperature and pressure, HFC-152a is a colourless gas.
Molecular weight: 66. 1
Boiling point under 101300Pa: -24. 7
Density of liquid at 20, kg. dm-3  0. 90
Vapor pressure at 25, MPa  0. 618
Critical temperature, 113. 5
Critical pressure, MPa 4. 58
Critical density, kg. dm-3 0. 365
Latent heat of vapourisation at Bp. , KJKg-1 324. 2
Solubility at25    
HFC-152a in water, % by wt 0. 3
Water in HFC-152a, % by wt 0. 17
Thermal conductivity at 25  
Liquid, W. m-1. -1 0. 0113

ODP:
Limited flammability (with air), %(V/V) 5. 1-17. 1

Commercial Specification (ISO7201):

Purity, %, min 99. 8 99. 95
Moisture content ppm, max 20 20

2. USES
As refrigerant, blowing agent, aerosol propellent and cleanning agent.