EXPERIMENTAL AND PREDICTED EXCESS-ENTHALPIES OF THE 2,2,2-TRIFLUOROETHANOL-WATER-TETRAETHYLENE GLYCOL DIMETHYL ETHER TERNARY-SYSTEM USING BINARY MIXING DATA

Excess enthalpies of the ternary mixture 2,2,2-trifluoroethanol-water- tetraethylene glycol dimethyl ether and the corresponding binary mixtu res at 298.15 K have been measured using a standard Calvet microcalori meter. Wilson, NRTL, UNIQUAC and Wang et al. models have been used to correlate the binary excess enthalpies and, using the parameters obtai ned, to predict ternary excess molar enthalpies, H-E. Several empirica l equations predicting ternary-mixture properties from the binary-mixi ng data have been also examined.