Propane Vapor Pressure
Vapor pressure in psi (bar) of propane vapor at temperatures ranging form -30 to 110 deg F (-42 to 43 degC )
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The vapor pressure of propane (C3H8) vapor depends on the temperature. The vapor pressure of 100% propane at temperatures ranging from -44oF to 110oF (-42oC to 43oC) can be found in the diagram and table below:
| Temperature |
Vapor Pressure | ||
| (oF) | (oC) | (psig) | (bar) |
| -44 1) | -42.2 | 0 | 0 |
| -30 | -34.4 | 6.8 | 0.5 |
| -20 | -28.9 | 11.5 | 0.8 |
| -10 | -23.3 | 17.5 | 1.2 |
| 0 | -17.8 | 24.5 | 1.7 |
| 10 | -12.2 | 34 | 2.3 |
| 20 | -6.7 | 42 | 2.9 |
| 30 | -1.1 | 53 | 3.7 |
| 40 | 4.4 | 65 | 4.5 |
| 50 | 10.0 | 78 | 5.4 |
| 60 | 15.6 | 93 | 6.4 |
| 70 | 21.1 | 110 | 7.6 |
| 80 | 26.7 | 128 | 8.8 |
| 90 | 32.2 | 150 | 10.3 |
| 100 | 37.8 | 177 | 12.2 |
| 110 | 43.3 | 204 | 14.1 |
1) Boiling point of LPG-gas at atmospheric pressure
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