| Properties | Commercial Butane | Commercial Propane |
|---|---|---|
| Calorific Values – Gross (BTU / lb) | 21200 | 21500 |
| Calorific Values – Net (BTU / lb) | 19700 | 19900 |
| Relative Density of liquid at 15°C | 0.57 – 0.58 | 0.50 – 0.51 |
| imperial Gallons / ton at 15°C | 385-393 | 439-448 |
| Liter / tonne at 15°C | 1,723 – 1,760 | 1,965 – 2,019 |
| Relative density compared to air at 15°C and 1 Bar (14.7 psi) | 1.90 – 2.10 | 1.40– 1.55 |
| Calorific Values – Gross (BTU / lb) | 21200 | 21500 |
| Imperial Gallons / ton at 15°C) | 385 – 393 | 439 – 448 |
| Relative Density of liquid at 15°C) | 0.57 – 0.58 | 0.50 – 0.51 |
| Liter / tonne at 15°C) | 1,723 – 1,760 | 1,965 – 2,019 |
| Relative density compared to air at 15°C and 1 Bar (14.7 psi) | 1.90 – 2.10 | 1.40 – 1.55 |
| Volume of gas (liters) per kg of liquid at 15°C and 1 Bar (14.7 psi)) | 406 – 431 | 537 – 543 |
| Volume of gas (ft³) per lb ofliquid at 15°C and 1 Bar (14.7 psi) | 6.5 – 6.9 | 8.6 – 8.7 |
| Sulphur Content | Negligible to 0.02 | Negligible to 0.02 |
| Limits of Flammability (%age by volume of gas-air mixture to | 1.8 – 8.4 | 2.4 – 9.5 |
| Air Required for combustion (ft³ to burn 1 ft³ of gas at STP) | 30 | 24 |
