R-507A PT Chart
A1 GWP 3985Azeotropic blend (R-125/R-143a). HFC Blend.
Phase-down (high GWP)
Boiling Point
-52.1°F
-46.7°C
Critical Temp
159.1°F
70.6°C
Critical Pressure
537.4 psia
37.05 bar
R-507A Pressure-Temperature Graph
R-507A Saturation Pressure Table
Blue values indicate vacuum (below atmospheric pressure).
| °F | °C | PSIG | PSIA | kPa | bar |
|---|---|---|---|---|---|
| -80 | -62.2 | -8.2 | 6.54 | 45.1 | 0.451 |
| -75 | -59.4 | -7.1 | 7.64 | 52.6 | 0.526 |
| -70 | -56.7 | -5.8 | 8.88 | 61.2 | 0.612 |
| -65 | -53.9 | -4.4 | 10.28 | 70.9 | 0.709 |
| -60 | -51.1 | -2.8 | 11.85 | 81.7 | 0.817 |
| -55 | -48.3 | -1.1 | 13.6 | 93.8 | 0.938 |
| -50 | -45.6 | 0.9 | 15.55 | 107.2 | 1.072 |
| -45 | -42.8 | 3.0 | 17.72 | 122.2 | 1.222 |
| -40 | -40.0 | 5.4 | 20.11 | 138.7 | 1.387 |
| -35 | -37.2 | 8.1 | 22.75 | 156.9 | 1.569 |
| -30 | -34.4 | 11.0 | 25.65 | 176.9 | 1.769 |
| -25 | -31.7 | 14.1 | 28.83 | 198.8 | 1.988 |
| -20 | -28.9 | 17.6 | 32.3 | 222.7 | 2.227 |
| -15 | -26.1 | 21.4 | 36.09 | 248.8 | 2.488 |
| -10 | -23.3 | 25.5 | 40.21 | 277.2 | 2.772 |
| -5 | -20.6 | 30.0 | 44.68 | 308.1 | 3.081 |
| 0 | -17.8 | 34.8 | 49.52 | 341.4 | 3.414 |
| 5 | -15.0 | 40.0 | 54.75 | 377.5 | 3.775 |
| 10 | -12.2 | 45.7 | 60.38 | 416.3 | 4.163 |
| 15 | -9.4 | 51.8 | 66.45 | 458.1 | 4.581 |
| 20 | -6.7 | 58.3 | 72.96 | 503.1 | 5.031 |
| 25 | -3.9 | 65.3 | 79.95 | 551.2 | 5.512 |
| 30 | -1.1 | 72.7 | 87.43 | 602.8 | 6.028 |
| 35 | 1.7 | 80.7 | 95.42 | 657.9 | 6.579 |
| 40 | 4.4 | 89.3 | 103.95 | 716.7 | 7.167 |
| 45 | 7.2 | 98.3 | 113.03 | 779.3 | 7.793 |
| 50 | 10.0 | 108.0 | 122.7 | 846.0 | 8.46 |
| 55 | 12.8 | 118.3 | 132.98 | 916.9 | 9.169 |
| 60 | 15.6 | 129.2 | 143.88 | 992.0 | 9.92 |
| 65 | 18.3 | 140.7 | 155.44 | 1071.8 | 10.718 |
| 70 | 21.1 | 153.0 | 167.69 | 1156.2 | 11.562 |
| 75 | 23.9 | 165.9 | 180.64 | 1245.4 | 12.454 |
| 80 | 26.7 | 179.6 | 194.32 | 1339.8 | 13.398 |
| 85 | 29.4 | 194.1 | 208.76 | 1439.4 | 14.394 |
| 90 | 32.2 | 209.3 | 224.0 | 1544.4 | 15.444 |
| 95 | 35.0 | 225.4 | 240.06 | 1655.2 | 16.552 |
| 100 | 37.8 | 242.3 | 256.98 | 1771.8 | 17.718 |
| 105 | 40.6 | 260.1 | 274.78 | 1894.6 | 18.946 |
| 110 | 43.3 | 278.8 | 293.51 | 2023.7 | 20.237 |
| 115 | 46.1 | 298.5 | 313.2 | 2159.4 | 21.594 |
| 120 | 48.9 | 319.2 | 333.89 | 2302.1 | 23.021 |
| 125 | 51.7 | 340.9 | 355.64 | 2452.0 | 24.52 |
| 130 | 54.4 | 363.8 | 378.48 | 2609.5 | 26.095 |
| 135 | 57.2 | 387.8 | 402.48 | 2775.0 | 27.75 |
| 140 | 60.0 | 413.0 | 427.7 | 2948.9 | 29.489 |
| 145 | 62.8 | 439.5 | 454.23 | 3131.8 | 31.318 |
| 150 | 65.6 | 467.5 | 482.17 | 3324.4 | 33.244 |
Properties
| ASHRAE Designation | 507A |
| Safety Classification | A1 (non-flammable, low toxicity) |
| GWP (AR5) | 3985 |
| ODP | 0 |
| Molecular Weight | 98.86 g/mol |
| Boiling Point (1 atm) | -52.1°F / -46.7°C |
| Critical Temperature | 159.1°F / 70.6°C |
| Critical Pressure | 537.4 psia / 37.05 bar |
| Category | HFC Blend |
Common Applications
- Low-temp refrigeration
- Ice machines
- Transport refrigeration