Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Vapor-liquid equilibrium (VLE) data for the binary system of acetone (1) + hexamethyl disiloxane (HMDSO, 2) and the ternary system of acetone (1) + HMDSO (2) + ethyl acetate (EAC, 3) were obtained at 101.3 kPa. The acetone (1) + HMDSO (2) mixture had azeotropic temperature of 329.00 K, x1,az = 0.9661. The binary VLE values and ternary VLE values were confirmed to be thermodynamically consistent using the Herrington method and the McDermott-Ellis method, respectively. The binary VLE data were correlated using NRTL, UNIQUAC and Wilson models, and the standard deviations of the equilibrium temperature and the vapor-phase mole fraction of the binary system were within 0.4892 K and 0.0083, respectively. Furthermore, the acetone (1) + HMDSO (2) + EAC (3) ternary VLE data were predicted with the NRTL model using the binary interaction parameter obtained by association of the contained binary system, and the standard deviations were within a reasonable range (T = 0.4458, y1 = 0.0055, y2 = 0.0027, y3 = 0.0051). To further describe the ternary system, the residue curves were provided by Aspen Plus using the NRTL model.