Add time:07/15/2019         Source:sciencedirect.com

POTASSIUM TARTRATE (cas 304655-91-2) solubility in water was measured and the aqueous biphasic system formed by this organic salt and PEG (1500 or 600) were characterized experimentally at 278.15, 293.15 and 308.15 K by measuring the composition of the equilibrium phases. The experimental binodal curves and the tie-lines were correlated using Merchuk and Guan equations. As expected for polymer-salt Aqueous Two-Phase Systems, the heterogeneous region increases with temperature and polymer molecular weight. Their effects on the phase behavior are discussed and related to the models' parameters.

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