A non-ozone depleting azeotrope of R-23 and FC-116 used to replace R-13 and R-503 in the low stage of cascade systems. For new equipment and retrofits.

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General Information

Item Specification
Class HFC
Refrigerant Type Azeotrope
Typical Lubricant POE
Substitutes CFC-13 / R-503
Contains HFC-23 (46%), FC-116 (54%)
Notes Lower discharge temperatures than R-13 and R-23. Good performance match to R-503.

Physical Properties

Property Value
Chemical Name Trifluoromethane, Hexafluoroethane
Chemical Notation CHF3, C2 F6
Molecular Weight 95.4
Boiling Point (°C) -87.4
Freezing Point (°C) -17.8
Critical Temperature (°C) 11.2
Critical Pressure (bar) 37.72
Liquid Density (kg/m³) 0°C 969.5
Specific Heat of Liquid @ Constant Pressure @ 25°C (kJ/(kg.K)) NA
Specific Heat of Vapor @ Constant Pressure @ 25°C (kJ/(kg.K)) NA
Vapour Density (kg/m³) 25°C 3.9
GWP 13396
ODP Non-ozone depleting
ATEL/ODL (kg/m³) 0.2
Practical Limit (kg/m³) 0.25
Flammable range, %vol. in air (Based on ASHRAE Standard 34 with Match Ignition) None
ANSIASHRAE Standard 36-1992 Safety Group Classification A1
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