|
PHYSICAL
CONSTANTS OF HYDROCARBONS
|
|
Paraffins
|
| Hydrocarbon |
Ethane
|
Propane
|
ISO-Butane
|
N-Butane
|
N-Pentane
|
Air
|
Water
|
| Formula |
C2H6
|
C3H8
|
C4H10
|
C4H10
|
C5H12
|
H2O
|
|
| Normal State |
Gas
|
Gas
|
Gas
|
Gas
|
Liquid
|
Gas
|
Liquid
|
| Boiling Point - F |
-127.5
|
-43.7
|
10.9
|
31.1
|
96.9
|
-317.7
|
212
|
| Boiling Point - C |
-127.5
|
-42.1
|
-11.7
|
-0.5
|
36.1
|
-194.3
|
100
|
| Weight of liquid at 60 F - lbs/gallon |
3.11
|
4.23
|
4.69
|
4.86
|
5.387
|
7.136
|
8.328
|
| Weight of liquid at 60 F - specific gravity |
0.374
|
0.508
|
0.563
|
0.584
|
0.631
|
0.856
|
1.000
|
| Weight of liquid at 60 F - API gravity |
247
|
147.2
|
119.8
|
110.6
|
92.7
|
165.3
|
10
|
| Weight of vapour -lbs/100 cubic feet |
7.923
|
11.62
|
15.31
|
15.31
|
19.01
|
7.64
|
|
| Weight of vapour - specific gravity (Air-1) |
1.038
|
1.522
|
2.006
|
2.006
|
2.491
|
1.000
|
|
| Gross heat of combustion -Btu/lb |
22,329
|
21,670
|
21,265
|
21,315
|
21,094
|
||
| Gross H.of C. -Btu/cubic foot at 60F |
1,783
|
2,558
|
3,354
|
3,368
|
4,015
|
||
| Gross H.of C. -Btu/US Gallon |
69,433
|
91,044
|
99,097
|
103,047
|
110,125
|
||
| Flammability Limits - Lower % in Air |
3.0
|
2.2
|
1.8
|
1.9
|
1.5
|
||
| Flammability Limits - Upper % in Air |
12.5
|
9.5
|
8.4
|
8.5
|
7.8
|
