J. Linek

Isothermal vapour-liquid equilibria and excess volumes in the methanol-aliphatic ether systems

Vapour-liquid equilibria were measured isothermally in the binary systems containing methanol with butyl methyl ether, tert-butyl methyl ether, ethyl propyl ether, diisopropyl ether and butyl ethyl ether. The data were correlated using the Redlich-Kister, Wilson, and NRTL equations within the accuracy of experimental errors. The excess free volumes of liquid mixtures were determined and correlated at 25 °C.

Densities and excess volumes of pentan-3-one + 1,2-dichloroethane, + 1,3-dichloropropane, +1,4 -dichlorobutane, + trichloromethane, +1,1,1-trichloroethane, +1,1,2,2,-tetrachloroethane binary mixtures at 298.15 K

Abstract Densities and excess molar volumes, VE, of pentan-3-one+1,2-dichloroethane, +1,3-dichloropropane, +1,4-dichlorobutane, +trichloromethane, +1,1,1-trichloroethane, +1,1,2,2-tetrachloroethane are presented at 298.15 K and atmospheric pressure over the whole composition range. These measurements were performed in order to complement the data on VLE [M. Teodorescu, A. Barhala, O. Landauer, ELDATA: Int. Electron. J. Physico-Chem. Data 3 (1997) 101–108; M. Teodorescu, K. Aim, I. Wichterle, Fluid Phase Equilibria, in press] and to investigate the influence of molecular structure of these chloroalkanes on VE in their mixtures with pentan-3-one. At this temperature, VE was found to be slightly positive at high mole fractions and slightly negative at low mole fractions of 1,2-dichloroethane in case of the first system. For all the other systems, VE was negative. The VE experimental results were correlated using the fourth-order Redlich–Kister equation, and the maximum likelihood procedure was applied for evaluating the adjustable parameters.

Isothermal vapour-liquid equilibria and densities for the 5-chloropentan-2-one + n-hexane, + toluene and + ethylbenzene binary mixtures

Isothermal vapour–liquid equilibrium (VLE) data are reported for binary mixtures containing 5-chloropentan-2-one with n-hexane (from 323.15 to 353.15 K), and toluene or ethylbenzene (from 343.15 to 373.15 K). The data are complemented by excess molar volumes (VE) obtained from density measurements at 298.15 K over the whole composition range. The VLE and VE experimental data are correlated by means of the Redlich–Kister equation using the maximum likelihood procedure.