The following table represents the approximate vapour pressures of Propane and Butane (commercial grade) as they relate to various temperatures while contained.
| Temperature (Degrees F) |
Approx Pressure (Propane) |
PSIG (Butane) |
| -40 | 1.3 | -- |
| -30 | 5.5 | -- |
| -20 | 10.7 | -- |
| -10 | 16.7 | -- |
| 0 | 23.5 | -- |
| 10 | 31.3 | -- |
| 20 | 40.8 | -- |
| 30 | 51.6 | -- |
| 40 | 63.3 | 3.0 |
| 50 | 77.1 | 6.9 |
| 60 | 92.5 | 11.5 |
| 70 | 109.3 | 16.5 |
| 80 | 128.1 | 22.0 |
| 90 | 149.3 | 29.0 |
| 100 | 172.3 | 37.0 |
| 110 | 197.3 | 46.0 |
