Loading page...
Klea® 507
Klea® 507 (R-507) nonflammable alternative refrigerant for commercial refrigeration
Overview
Klea® 507 is a proven azeotropic HFC blend of R-125 and R-143a (50/50 by weight) designed as a safe, effective replacement for R-22 and R-502 in commercial refrigeration applications. With zero ozone depletion potential (ODP), it offers excellent performance and reliability in supermarket refrigeration, transport refrigeration, and other commercial systems where safety and efficiency are critical.
Klea® 507 is particularly well-suited for flooded systems and delivers capacity and efficiency equivalent to R-502. For applications seeking lower global warming potential (GWP), Klea® 407A is recommended alternatives in supermarket and commercial refrigeration.
Applications
- Commercial refrigeration (supermarkets, cold storage)
- Transport refrigeration
- Flooded system configurations
- Retrofit and new installations replacing R-22 and R-502
Key benefits
- Full operating range compatibility with R-502 systems
- Capacity and efficiency closely matching R-502
- Stable performance over multiple leakage and recharge cycles without refrigerant separation
- Lower compressor discharge temperature (up to 7.4 °C / 13.3 °F cooler than R-502), promoting longer compressor life and improved lubricant stability
- Nonflammable and safe for use in environments with personnel and the public (ASHRAE A1 classification)
- Zero ozone depletion potential (ODP = 0)
Physical properties
| Property | S.I. Units | Value | British Units | Value |
|---|---|---|---|---|
| Molecular weight | Kg/Kmol | 98.86 | lbm/lbmol | 98.86 |
| Critical temperature | °C | 70.62 | °F | 159.11 |
| Critical pressure | bara | 37.05 | psia | 537.36 |
| Critical density | kg/m³ | 490.77 | lb/ft³ | 30.64 |
| Atmospheric boiling point | °C | -46.741 | °F | -52.1 |
| Atmospheric dew point | °C | -46.741 | °F | -52.1 |
| Latent heat of vapourisation at atmospheric pressure | kJ/kg | 196.8 | BTU/lb | 84.61 |
| Saturated vapour density at atmoshpheric pressure | kg/m³ | 5.5861 | lb/ft³ | 0.35 |
| Liquid vapour pressure @25°C | bara | 12.826 | psia | 186.0 |
| Coefficient of volumetric thermal expansion for saturated liquid at 25°C | °C⁻¹ | 0.0050859 | °F⁻¹ | 0.00283 |
| Speed of sound* for saturated vapour at 25°C | m/s | 131.85 | ft/s | 432.58 |
| Adiabatic exponent* for saturated vapour at 25°C | - | 1.38 | - | 1.38 |
| Latent heat of vapourisation at 25°C | kJ/kg | 135.76 | BTU/lb | 58.37 |
| Saturated vapour density at 25°C | kg/m³ | 68.888 | lb/ft³ | 4.30 |
| Saturated vapour density at 0°C | kg/m³ | 32.251 | lb/ft³ | 2.01 |
Get in touch
For more information, please contact our team. Please note that product availability may vary by region.
Related articles
view all related articles.png&w=3840&q=75)
Announcement
OF&EM
Refrigerant Gases
+2
Media Center
Orbia Fluor & Energy Materials Welcomes Refrigerant Applications Director – Dr. Samuel F. Yana Motta
21 October 2025
.png&w=3840&q=75)
Press Release
Refrigerant Gases
Klea Edge
+4
Media Center
Orbia Fluor & Energy Materials Establishes Service Technician Procedures for Next-Gen Refrigerants
28 April 2025
Press Release
Refrigerant Gases
Klea
+2
Media Center
Orbia F&EM Klea® 473A wins Refrigeration Innovation of the Year at the 2022 Cooling Industry Awards
23 September 2022