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Liquid–liquid equilibrium (LLE) data for N-butylpyridiniumtetrafluoroborate ([BPy]BF4)+sulfate salt+H2O systems have been determined experimentally at T=(298.15, 308.15, and 318.15)K. The binodal curves agree with an empirical nonlinear expression developed by Merchuk, while the tie-line data are described by the Othmer–Tobias, Bancroft, two-parameter, and Setschenow-type equations. Factors, such...
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