Briton R22 Refrigerant Gas
Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). This colorless gas is better known as HCFC-22, or R-22. It is commonly used as a propellant and refrigerant. These applications are being phased out in developed countries due to the compound’s ozone depletion potential (ODP) and high global warming potential (GWP), although global use of R-22 continues to increase because of high demand in developing countries. R-22 is a versatile intermediate in industrial organofluorine chemistry, e.g. as a precursor to tetrafluoroethylene.
Description
Briton R22 Refrigerant Gas Physical Properties
| Property |
Value |
| Density (ρ) at -69 °C (liquid) |
1.49 g.cm−3 |
| Density (ρ) at -41 °C (liquid) |
1.413 g.cm−3 |
| Density (ρ) at -41 °C (gas) |
4.706 kg.m−3 |
| Density (ρ) at 15 °C (gas) |
3.66 kg.m−3 |
| Specific gravity at 21 °C (gas) |
3.08 (air = 1) |
| Specific volume (ν) at 21 °C (gas) |
0.275 m3.kg−1 |
| Density (ρ) at 15 °C (gas) |
3.66 kg.m−3 |
| Triple point temperature (Tt) |
-157.39 °C (115.76 K) |
| Critical temperature (Tc) |
96.2 °C (369.3 K) |
| Critical pressure (pc) |
4.936 MPa (49.36 bar) |
| Vapor pressure at 21.1 °C (pc) |
0.9384 MPa (9.384 bar) |
| Critical density (ρc) |
6.1 mol.l−1 |
| Latent heat of vaporization (lv) at boiling point (-40.7 °C) |
233.95 kJ.kg−1 |
| Heat capacity at constant pressure (Cp) at 30 °C (86 °F) |
0.057 kJ.mol−1.K−1 |
| Heat capacity at constant volume (Cv) at 30 °C (86 °F) |
0.048 kJ.mol−1.K−1 |
| Heat capacity ratio (γ) at 30 °C (86 °F) |
1.178253 |
| Compressibility factor (Z) at 15 °C |
0.9831 |
| Acentric factor (ω) |
0.22082 |
| Molecular dipole moment |
1.458 D |
| Viscosity (η) at 0 °C |
12.56 µPa.s (0.1256 cP) |
| Ozone depletion potential (ODP) |
0.055 (CCl3F = 1) |
| Global warming potential (GWP) |
1810 (CO2 = 1) |
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