A non-ozone depleting azeotropic mixture of R-125 and R-143a. It has been primarily designed to replace R-502 in low- and medium-temperature commercial refrigeration applications such as supermarket display cases and ice machines. For new equipment and retrofits.
Genetron® AZ-50®
General Information
| Item | Specification |
|---|---|
| ASHRAE # | R-507A |
| Class | HFC |
| Refrigerant Type | Azeotrope |
| Typical Lubricant | POE |
| Substitutes | HCFC-22, R-502 |
| Contains | HFC-125 (50%), HFC-143a (50%) |
| Glide | No Glide |
| Notes | Slightly higher pressures and efficiency than R-404A. Best choice for systems with flooded evaporators. EPA SNAP approved and UL Classified. |
Physical Properties
| Property | Value |
|---|---|
| Chemical Name | Pentafluoroethane, Trifluoroethane |
| Chemical Notation | CF3CHF2, CF3CH3 |
| Molecular Weight | 98.9 |
| Boiling Point (°C) | -46.7 |
| Freezing Point (°C) | -116.7 |
| Critical Temperature (°C) | 70.6 |
| Critical Pressure (bar) | 37.05 |
| Liquid Density (kg/m³) 0°C | 1156.3 |
| Specific Heat of Liquid @ Constant Pressure @ 25°C (kJ/(kg.K)) | 1.5388 |
| Specific Heat of Vapor @ Constant Pressure @ 25°C (kJ/(kg.K)) | 1.2253 |
| Vapour Density (kg/m³) 25°C | 4.04 |
| GWP | 3985 |
| ODP | Non-ozone depleting |
| ATEL/ODL (kg/m³) | 0.53 |
| Practical Limit (kg/m³) | 0.53 |
| AIT (°C) | ND |
| Flammable range, %vol. in air (Based on ASHRAE Standard 34 with Match Ignition) | None |
| ANSIASHRAE Standard 36-1992 Safety Group Classification | A1 |