Selected Compounds found in LP-Gas
|
| |
Methane |
Ethene |
Ethane |
Propene |
Propane |
Iso-Butane |
N-Butane |
Air |
Water |
| Formula |
CH4 |
C2H4 |
C2H6 |
C3H6 |
C3H8 |
C4H10 |
C4H10 |
|
H2O |
| Vapor
Pressure @ 100º F |
| PSIG (gauge) |
..... |
..... |
..... |
212.5 |
174.8 |
58.8 |
37.3 |
..... |
..... |
- PSIA (absolute)
|
..... |
..... |
..... |
227.2 |
189.5 |
73.5 |
52 |
..... |
0.95 |
- Normal State @ STP (*)
|
GAS |
GAS |
GAS |
GAS |
GAS |
GAS |
GAS |
GAS |
LIQUID |
| Boiling
Point of Liquid @ atmospheric pressure |
| º F |
-258.5 |
-154.7 |
-128.2 |
-53.9 |
-43.8 |
10.9 |
31.1 |
-317.7 |
212 |
- º C
|
-161.4 |
-103.7 |
-89 |
-47.7 |
-42.1 |
-11.7 |
-0.5 |
-194.3 |
100 |
| Weight of
Liquid @ 60º F |
|
|
|
|
|
|
|
|
| Pounds / gallon |
2.5 |
3.3 |
3.11 |
4.35 |
4.23 |
4.69 |
4.86 |
7.136 |
8.337 |
| Specific Gravity |
.3 |
..... |
.374 |
.5218 |
.508 |
.563 |
.584 |
.856 |
1.000 |
- API Gravity
|
340.0 |
..... |
247.0 |
139.7 |
147.0 |
119.8 |
110.8 |
165.3 |
10.0 |
| Cubic
Feet of Vapor @ STP formed from |
| 1 Gallon Liquid @ 60º F |
59.0 |
44.6 |
39.35 |
37.9 |
36.45 |
30.65 |
31.79 |
..... |
..... |
- 1 Pound Liquid
|
23.6 |
13.21 |
12.65 |
8.71 |
8.62 |
6.53 |
6.54 |
..... |
..... |
| Weight of
Vapor @ STP |
| Pounds / hundred cubic
foot |
4.227 |
7.393 |
7.923 |
11.09 |
11.62 |
15.31 |
15.31 |
7.64 |
..... |
- Specific Gravity (Air=1)
|
.554 |
.9684 |
1.038 |
1.4527 |
1.522 |
2.006 |
2.006 |
1.000 |
..... |
| Gross
Heat of Combustion |
| Btu / pound |
23,920 |
21,650 |
22,350 |
21,060 |
21,690 |
21,290 |
21,340 |
..... |
..... |
| Btu / cubic foot @ 60º F |
1,011 |
1,601 |
1,771 |
2,335 |
2,521 |
3,259 |
3,267 |
..... |
..... |
- Btu / gallon @ 60º F
|
..... |
70,910 |
68,900 |
87,740 |
91,300 |
99,300 |
103,000 |
..... |
..... |
| Cf of Air to Burn 1 cf
of Gas @ STP |
9.55 |
14.29 |
16.71 |
21.44 |
23.87 |
31.03 |
31.03 |
..... |
..... |
- Pounds of Air to Burn 1 pound
of Gas
|
17.24 |
14.76 |
16.13 |
14.76 |
15.71 |
15.49 |
15.49 |
..... |
..... |
| Explosive
Limits |
| Lower % in Air |
4.9 -
6.2 |
2.75 |
3.0 -
3.3 |
2.0 |
2.0 -
2.4 |
1.80 |
1.5 -
1.9 |
..... |
..... |
- Upper % in Air
|
12.7 -
16.0 |
28.60 |
10.6 -
15.0 |
11.0 |
7.0 -
9.5 |
8.44 |
5.7 -
8.5 |
..... |
..... |
| Heat of
Vaporization of Liquid @ boiling point & atmospheric
pressure |
| Btu / pound |
245 |
208 |
211 |
189 |
183 |
158 |
166 |
92 |
970.3 |
- Btu / gallon
|
712 |
686 |
696 |
822 |
774 |
741 |
797 |
656.5 |
8089.4 |
- Ratio of Liquid Volume @ 60º F
to Gas Volume @ STP
|
443 |
333.7 |
294.3 |
283.5 |
272.7 |
229.3 |
237.8 |
..... |
..... |
| Freezing
Point of Liquid @ atmospheric pressure |
| º F |
-296.5 |
-272.6 |
-297.8 |
-301.4 |
-305.9 |
-255.3 |
-216.9 |
..... |
32 |
- º C
|
-182.5 |
-169.2 |
-183.2 |
-185.2 |
-187.7 |
-159.4 |
-138.3 |
..... |
0 |
- Molecular Weight
|
16.042 |
28.052 |
30.068 |
42.079 |
44.094 |
58.12 |
58.12 |
28.966 |
18.016 |
- Gallons / pound mol @ 60º F
|
6.4 |
8.5 |
9.64 |
9.7 |
10.41 |
12.38 |
11.94 |
4.06 |
2.16 |
| Specific
Heat @ STP |
| Cp Liquid - Btu / pound
/º F |
..... |
..... |
..... |
..... |
..... |
..... |
.55@32º
F |
..... |
..... |
| Cp Vapor - Btu / pound
/º F |
0.526 |
0.362 |
0.413 |
0.352 |
0.390 |
0.406 |
0.396 |
..... |
..... |
| Cv Vapor - Btu / pound
/º F |
0.402 |
0.288 |
0.347 |
0.298 |
0.346 |
0.373 |
0.363 |
..... |
..... |
| Cp/Cv Vapor - Btu / pound
/º F |
1.306 |
1.258 |
1.189 |
1.18 |
1.128 |
1.088 |
1.09 |
..... |
..... |
| Critical
Conditions |
| Temperature - º F |
-116.5 |
49.8 |
90.1 |
196.5 |
206.2 |
273.2 |
305.6 |
-221.3 |
705 |
| Temperature - º C |
-82.5 |
9.9 |
32.3 |
91.4 |
96.8 |
134.0 |
152.0 |
-140.7 |
374.1 |
| Pressure - PSIA |
673 |
742 |
708 |
667 |
617 |
530 |
551.0 |
547 |
3206 |
| Pressure - atmospheres |
45.8 |
50.5 |
48.2 |
45.4 |
42.0 |
36.1 |
37.5 |
37.2 |
218.2 |
| Density - pounds / gallon |
1.351 |
..... |
1.695 |
..... |
1.888 |
1.946 |
1.891 |
..... |
..... |
- Volume - cubic feet / pound mol
|
1.586 |
..... |
2.371 |
..... |
3.123 |
3.990 |
4.130 |
..... |
..... |
* STP
= Standard Temperature & Pressure
Conditions = 60º F & atmospheric pressure.
Based on material from Handbook
Butane-Propane Gases, Third Edition, 1951, Jenkins
Publications, Inc. |
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