Typical Properties of Propane
| Formula | C3H8 |
| BTU/gal | 91,500 |
|
BTU/cu. ft. of gas at 60F,
atmospheric pressure |
2,520 |
| BTU/lb. of gas | 21,560 |
|
Range of inflammability: percent
of gas in gas-air mixture |
2.15% to 9.60% |
| Vapor pressure, psig at 60F | 92 |
| Vapor pressure, psig at 100F | 172 |
|
Lbs. per gal. of liquid at 60F, storage tank pressure |
4.23 |
|
Specific gravity of liquid at 60F
(water = 1) |
0.51 |
|
Boiling point of liquid at
atmospheric pressure |
-44F |
|
Cu. ft. of gas per pound of liquid
(at 60F, atmospheric pressure) |
8.59 |
|
Cu. ft. of gas per gallon of liquid
(at 60F, atmospheric pressure) |
36.5 |
| Specific gravity of gas (air = 1) | 1.53 |