Physico-chemical properties


Physical data of liquid gas |
Propan |
n-Butan |
Gas density at 15 ° C in kg / l |
0,51 |
0,58 |
Gas density at 0 ° C 1 bar in kg / l |
1,97 |
2,59 |
The ratio of density to air |
1,55 |
2,09 |
Specific volume in liquid state 1 kg of liquid gas 0 ° C in l |
1,88 |
1,68 |
Specific volume in liquid state 1 kg of liquid gas 15 ° C in l |
1,96 |
1,72 |
Volume of 1 kg of gas (in the case of 1 bar) at 0 ° C in l |
508 |
373 |
The volume of 1 kg of gas (in the case of 1 bar) at 15 ° C in l |
535 |
393 |
Steam pressure in bars, overpressure of 20 ° C |
7,353 |
1,089 |
Steam pressure in bars, overpressure 0 ° C |
3,703 |
0,059 |
Steam pressure in bars, overpressure -10 ° C |
2,424 |
- 0,289 |
Boiling point in ° C at 1.013 bar |
- 42 |
- 0,5 |
Evaporation heat at 0 ° C kJ / kg |
378,58 |
383,86 |
Calorific value (lower calorific value) kWh / kg |
12,87 |
12,69 |
Calorific value (higher calorific value) kWh / kg |
13,98 |
13,74 |
Wobbe number for H, kWh |
20,79 |
23,74 |
Maximum combustion temperature: air ° C |
1925 |
1895 |
Flashpoint of air |
510 |
430 |
Explosion limits (air) 0 vol. % of gas |
2 - 9,5 |
1,5 - 8,5 |
Max. Flame propagation velocity cm / s |
47,2 |
45,2 |
Theoretical air requirement (Lmin) m3n/m3n, |
24,36 |
32.308 |
Theoretical oxygen demand m3n/m3n, |
5,104 |
6,769 |
Quantity of burnt gas, wet conditions m3n/m3n |
26,244 |
34,709 |
The amount of gas burned, dry conditions m3n/m3n |
22,3 |
29,68 |
Dewpoint temperature of combustion products |
55 |
55 |
Carbon dioxide up to (%) |
13,8 |
14,1 |