Briton Refrigerant R22 – Chlorodifluoromethane
Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). This colorless gas is better known as HCFC-22, or R-22, or (CH ClF2). 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. R-22 cylinders are colored light green.
R-22 is prepared from chloroform:
HCCl3 + 2 HF → HCF2Cl + 2 HCl
Downloads
Download Briton Refrigerant R22 Gas Material Safety Data Sheet (MSDS).
| Product Specification | Material Safety Data Sheet (MSDS) |
|---|---|
Download  | Download |
Physical Properties
Physical Properties of Briton Refrigerant R22 Dichlorodifluoromethane
| 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 is 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 is 1) |
| Global warming potential (GWP) | 1810 (CO2 is 1) |