Refrigerants
Refrigerant-406a
Refrigerant 406a is a mixture of three components chlorodifluoromethane (R-22), isobutane (R-600a) and chlorodifluoroethane (R-142b) in the ratio 55/4/41. This refrigerant was designed as a drop-in replacement for R-12, which is compatible with the typical mineral oil lubricants used in R-12 systems. Since it is a zeotropic mixture, it has a range of boiling points which may increase the effectiveness of the heat transfer elements in refrigeration equipment. Its future is limited due to eventual phase-out of this refrigerant, because it contains R-22.
Chemical formula: CHCIF2, C4H10, C2H3ClF2
| INGREDIENT NAME | CAS № | WEIGHT, % |
| Chlorodifluoromethane (HFC–22) | 75-45-6 | 55 |
| 1-Choloro-1,1-Difluoroethane (HFC–142b) | 75-68-3 | 41 |
| Isobutane (HC-600a) | 75-28-5 | 4 |
Physical properties:
| Molar mass | g/mol | 89.86 |
| Boiling Point | °C | -32.7 |
| Critical Temperature | °C | 116.5 |
| Critical Pressure | MPa | 4.88 |
| Vapor Density, 250C | Kg/m3 | 20,66 |
| ODP | 0.036 | |
| GWP | 1560 |
Quality Standard:
| Purity, % | 99,5 |
| Moisture, ppm | 10 |
| Vapor Residue, ppm | 100 |
| Appearance | Colorless |
Package and Storage