MICROEMULSION FORMATION WITH CHLORINATED HYDROCARBONS OF DIFFERING POLARITY

Winsor Type I (o/w), Type II (w/o), and Type III (middle phase) microemulsions have been produced for water and CCl4, water and trichloroethylene (TCE), and water and 1,2-dichlorobenzene (DCB) with anionic surfactants and appropriate electrolytes. Attempts at producing classical phase behavior with several more polar chlorinated hydrocarbons were unsuccessful. These results are compared to those obtained previously with PCE. All studies were done at 25-degrees-C. The experimental data presented are electrolyte concentration and solubilization parameter for optimum formulations and salinity window for the Type III phase region.