Vapor-liquid equilibrium data for the propane, n-butane, isobutane, and propylene/isopropyl fluoride systems at 30 and 50.degree.C

This paper presents vapor-liquid equillibrium data at 30 and 50 /sup 0/C for the binary systems of isopropyl fluoride + propane, propylene, isobutane, and n-butane. The isopropyl fluoride/butane systems exhibit positive azeotropes. The computed, equimolar Gibbs free energy for the propylene system is roughly one-half that of the three alliphatic systems.