Microemulsions composed of AS/CTAB/n - C4H9OH/n - C7H16/H2O and SDS/CTAB/n
C4H9OH/n - C7H16/H2O were studied. Through measuring we investigated the st
ructure of such microemulsion as W/O, B. C. and O/W. In present of brine, m
iddle - phase microemulsion can form. The influence of salinity on formatio
n and characteristics of the middle - phase microemulsion is discussed.