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

ABSTRACT

Vapor-Liquid equilibrium data on the mixtures: propane + decahydronaphthalene(decalin) at (392, 439 and 415.5) K and propane + naphthalene at (373, 415 and 443) K are reported. The experiments have been conducted in a high pressure cell at pressures up to 9 MPa. The molar concentrations have been measured by a spectroscopic method described earlier (Marteau et al. Fluid Phase Equilib. 1996, 119, 213-230. Marteau and Tobaly, 1999, 53(4), 396-401.) Applied Spectrosc. ) which allows to eliminate the effect of the baseline shifts. P-x coexistence curves are determined up to the mixtures critical points. The unusual shape of the bubble curve of the propane + naphthalene mixture at 373 K is probably due to the existence of a critical end point at a temperature close to this one.