Abstract

Phase diagram and (liquid + liquid) equilibrium (LLE) results for {NaClO4 + polyethylene glycol 4000 (PEG 4000) + H2O} have been determined experimentally at T = (288.15, 298.15, and 308.15) K. The Chen-NRTL, modified Wilson and UNIQUAC models were used to correlate the values for the experimental tie-lines. The results show that the quality of fitting is better with the modified Wilson model. © 2009 Elsevier Ltd. All rights reserved.