Vapor–liquid equilibrium measurement of methanol–chloroform–tetrahydrofuran and methanol–chloroform–tetrahydrofuran–dimethyl sulfoxide mixtures at 101.32 kPa

The vapor-liquid equilibrium of methanol-chloroform-tetrahydrofuran mixtures of different composition and methanol-chloroform-tetrahydrofuran-dimethyl sulfoxide mixtures with different content of dimethyl sulfoxide at 101.32 kPa is studied experimentally. Experimental and calculated values of relative volatility of substances in four-component mixtures are compared. The results of extractive rectification of ternary mixtures on the basis of experimental and calculated data obtained by the NRTL model are predicted.