Sr. No.
Test strain
Surface tension in dynes cm
-1
with 6 cm ring
Emulsification index (E
24
) for petrol engine oil hydrocarbons
1
Standard
72.80
-
2
RK3
30.50
40.00
3
RK4
29.00
42.30
Table 2:
Surface tension and emulsification index by crude surfactant after 72 hours.
