HFCs
508B (R-508B)
A non-ozone depleting azeotrope of R-23 and R-116 used to replace R-13 and R-503 in the low stage of cascade systems. For new equipment and retrofits.
General Information
- Typical Lubricant
- POE
- Linear Formula
- CHF3, C2 F6
- ASHRAE Number
- R-508B
- Refrigerant Type
- Azeotrope
- Substitutes
- CFC-13, R-503
- Chemical Name
- Trifluoromethane, Hexafluoroethane
- Contains
- HFC-23 (46%), FC-116 (54%)
- Application
- Commercial Refrigeration
- Refrigerant Class
- HFC
Physical Properties
- Molecular Weight
- 95.4 lbm/lbmol
- Saturated Liquid Density
- 79.8 lb/ft3 at 30 °F
- Specific Heat of Liquid
- 0.30 at 30 °F
- Critical Pressure
- 549.54 psia
- Specific Heat of Vapor
- 0.14 at 30 °F
Temperature
- Critical Temperature
- 53.289 °F (ASTM D-1321)
- Boiling Point/Range
- -125.3 °F at 1 Atm
Safety & Environment
- Flammable Range
- None, %vol. in air (Based on ASHRAE Standard 34 with Match Ignition)
Standards & Approvals
- ASHRAE Safety Classification
- A1
Other
- Other Notes
- Lower discharge temperatures than R-13 and R-23. Good performance match to R-503.
General Information
- Typical Lubricant
- POE
- Linear Formula
- CHF3, C2 F6
- ASHRAE Number
- R-508B
- Refrigerant Type
- Azeotrope
- Substitutes
- CFC-13, R-503
- Chemical Name
- Trifluoromethane, Hexafluoroethane
- Contains
- HFC-23 (46%), FC-116 (54%)
- Application
- Commercial Refrigeration
- Refrigerant Class
- HFC
Physical Properties
- Molecular Weight
- 95.4 lbm/lbmol
- Saturated Liquid Density
- 79.8 lb/ft3 at 30 °F
- Specific Heat of Liquid
- 0.30 at 30 °F
- Critical Pressure
- 549.54 psia
- Specific Heat of Vapor
- 0.14 at 30 °F
Temperature
- Critical Temperature
- 53.289 °F (ASTM D-1321)
- Boiling Point/Range
- -125.3 °F at 1 Atm
Safety & Environment
- Flammable Range
- None, %vol. in air (Based on ASHRAE Standard 34 with Match Ignition)
Standards & Approvals
- ASHRAE Safety Classification
- A1
Other
- Other Notes
- Lower discharge temperatures than R-13 and R-23. Good performance match to R-503.
- Typical Lubricant : POE
- Linear Formula : CHF3, C2 F6
- ASHRAE Number : R-508B
- Refrigerant Type : Azeotrope
- Substitutes : CFC-13, R-503
- Chemical Name : Trifluoromethane, Hexafluoroethane
- Contains : HFC-23 (46%), FC-116 (54%)
- Application : Commercial Refrigeration
- Refrigerant Class : HFC
- Molecular Weight : 95.4 lbm/lbmol
- Saturated Liquid Density : 79.8 lb/ft3 at 30 °F
- Specific Heat of Liquid : 0.30 at 30 °F
- Critical Pressure : 549.54 psia
- Specific Heat of Vapor : 0.14 at 30 °F
- Critical Temperature : 53.289 °F (ASTM D-1321)
- Boiling Point/Range : -125.3 °F at 1 Atm
- Flammable Range : None, %vol. in air (Based on ASHRAE Standard 34 with Match Ignition)
- ASHRAE Safety Classification : A1
- Other Notes : Lower discharge temperatures than R-13 and R-23. Good performance match to R-503.