Studies of cyclohexane/TX 100 + ethylpropionate/water system: effect of ethylpropionate as cosurfactant

 Pseudoternary phase diagram of cyclohexane/TX 100-ethylpropionate/water system was determined at 30 ^°C. One phase microemulsion was obtained over a small area. The surfactant/cosurfactant ratio was both kept at 1:1 and 1:2 w/w. Viscosity, conductance, adiabatic compressibility values at various temperatures show the expected trend. The addition of NaCl changes one phase microemulsion to Winsor II system and no Winsor III system was obtained. Contact angle data, conductance, etc., show oil continuous system at a constant surfactant weight fraction. The microstructure of Winsor IV microemulsion seems to be W/O. Received: 14 May 1996 Accepted: 23 October 1996