Liquid-liquid equilibria of hydrocarbons with N-formylmorpholine

Liquid-liquid equilibria of N-formylmorpholine (NFM) with alkanes (n-hexane , n-heptane, isononane), aromatics (benzene, p-xylene, toluene), and water were investigated. The experiments were conducted by considering binary, te rnary, and quaternary systems at different temperatures (20-60 degrees C) a nd initial mixture compositions in the range of mole fraction equal to 0.3- 0.6 for NFM, 0.23-0.4 for alkanes, 0.11-0.4 for aromatics, and 0.072-0.24 f or water, respectively. The results are used to estimate the interaction pa rameters of the UNIQUAC expression, for the pairs NFM/n-hexane, NFM/n-hepta ne, NFM/isononane, NFM/benzene, NFM/p-xylene, NFM/toluene, and NFM/water wh ose values were not available in the literature.