Lpg specifications
Typical specification of LPG marketed by TOTALGAZ in Bangladesh
| Properties | Propane | Butane | LPG (C3:30% & C4:70%) |
| General | |||
| Physical state at 15°C and 1 atm | Gas | Gas | Gas |
| Molecular weight (gm/mole) | 44.09 | 58.12 | 51-54 |
| Boiling Point at 1 atm ( °C) | (-) 42.1 | (-) 0.5 | (-) 13 |
| Freezing point (°C) | (-) 187.7 | (-) 138.4 | (-) 153 |
| Critical Temperature ( °C) | 96.67 | 305.6 | 243 |
| Critical Pressure ( psia) | 616.25 | 551 | 570 |
| Auto-Ignition temperature in air at 1 atm (°C) | 470 | 500 | 490 |
| Color (appearance) | Colorless | Colorless | Colorless |
| Odor | Odorless | Odorless | Odorless |
| Toxicity | Non toxic | Non toxic | Non toxic |
| Liquid | |||
| Reid Vapor Pressure (RVP) at 15.6°C ( bars) | 12 | 3.6 | 5-7 |
| Gross Calorific Value at 15°C ( kcal/kg) | 11900 | 11800 | 11830 |
| Net Calorific Value at 15°C ( kcal/kg) | 10999 | 10845 | 10896 |
| Liquid density at 15°C ( kg/litre) | 0.51 | 0.575 | 0.5550 |
| Specific volume of liquid per Kg at 15 C (litre) | 1.96 | 1.73 | 1.7990 |
| Specific gravity of liquid at 15°C ( w.r.t water = 1) | 0.51 | 0.575 | &0.5555 |
| Vapor | |||
| Specific density at 15 C & 1 atm ( kg/m3) | 1.55 | 2.48 | 2.20 |
| Specific Volume of Gas per kg at 15 C, 1 atm (m3) | 0.5 | 0.38 | 0.42 |
| Explosive limit ( vol% of vapor in air gas mixture) | 2.4 to 9.3 | 1.8 to 8.8 | 2 to 9.5 |
| Gross Calorific Value at 15°C, ( kcal/Nm3) | 24000 | 30700 | 25226.67 |
| Net Calorific Value at 15°C, ( kcal/Nm3) | 22600 | 29000 | 10896.36 |
| Air required for combustion m3/m3 | 24 | 30 | 28 |