ABSTRACT
The phase diagram of the dodecyl dimethyl ammonium hydroxyl propyl sulfonate( DDAHPS)/ l-pentanol(C5HnOH)/ water ternary system has been established. It contains two isotropic monophase regions(Li and L:) and a liquid crystalline region( L.C.). The isotropic phase regions have been investigated by means of Raman spectroscopy and conductivity.