Vapor–liquid equilibria of the 1,1,1-trifluoroethane (HFC-143a) + propane (HC-290) system

Binary vapor–liquid equilibrium data were measured for the 1,1,1-trifluoroethane (HFC-143a) + propane (HC-290) system at temperature from 313.15 to 363.15 K. These experiments were carried out with a circulating-type apparatus with on-line gas chromatography. The experimental data were correlated well by Peng–Robinson Stryzek–Vera equation of state with the Wong–Sandler mixing rules. This system shows a positive azeotrope and the type I of critical behavior.