Liquid-Liquid Equilibria for the Quaternary Systems of Water + Dimethyl sulfoxide + 1-Pentanol + NaCl or + KCl

摘要

Liquid -liquid equilibrium data have been measured for one ternary system of water + dimethyl sulfoxide + 1-pentanol, and two quaternary systems of water + dimethyl sulfoxide + 1-pentanol + sodium chloride or + potassium chloride at temperatures from 283.15 K to 323.15 K under atmospheric pressure. The liquid phase splitting for ternary system of water + dimethyl sulfoxide + 1-pentanol can be enhanced by adding the same percentage of salts (sodium chloride or potassium chloride) and the influence of sodium chloride is more significant than that of potassium chloride. The experimental data were also compared with the values calculated by the Electrolyte-NRTL model. In general, the model reproduces reasonably for the LLE phase diagrams.