252
The Chemistry and Technology of Petroleum
TABLE 10.3
Surface Tension of Selected Hydrocarbons
Hydrocarbon
Surface Tension
°C
20
38
93
°F
68
100
200
n-Pentane
16.0
14.0
8.0
dyn/cm
16.0
14.0
8.0
mN/m
n-Hexane
18.4
16.5
10.9
dyn/cm
18.4
16.5
10.9
mN/m
n-Heptane
20.3
18.6
13.1
dyn/cm
20.3
18.6
13.1
mN/m
n-Octane
21.8
20.2
14.9
dyn/cm
21.8
20.2
14.9
mN/m
Cyclopentane
22.4
dyn/cm
22.4
mN/m
Cyclohexane
25.0
dyn/cm
25.0
mN/m
Tetralin
35.2
dyn/cm
35.2
mN/m
Decalin
29.9
dyn/cm
29.9
mN/m
Benzene
28.8
dyn/cm
28.8
mN/m
Toluene
28.5
dyn/cm
28.5
mN/m
Ethylbenzene
29.0
dyn/cm
29.0
mN/m
n-Butylbenzene
29.2
dyn/cm
29.2
mN/m
TABLE 10.4
Effect of Temperature on the Surface
Tension of Athabasca Bitumen
Temperature
Surface Tension
°C
°F
dyn/cm
mN/m
21.1
70.0
35.3
35.3
23.3
74.0
34.7
34.7
30.0
86.0
30.1
30.1
43.3
110.0
27.3
27.3
51.7
125.0
28.0
28.0
65.6
150.0
25.4
25.4
73.9
165.0
22.5
22.5
82.2
180.0
21.0
21.0
87.8
190.0
18.9
18.9
95.6
204.0
20.0
20.0
104.0
219.0
19.2
19.2
123.9
255.0
18.2
18.2