Genetron® AZ-50®

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.

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General Information

Item Specification
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
Flammable range, %vol. in air (Based on ASHRAE Standard 34 with Match Ignition) None
ANSIASHRAE Standard 36-1992 Safety Group Classification A1
Download TDS (489 KB) | Download MSDS