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Title: Densities and viscosities of binary and ternary mixtures and aqueous two-phase system of poly(ethylene glycol) 2000 + diammonium hydrogen citrate + water at different temperatures
Authors: Kalaivani, S.
Srikanth, C.K.
Regupathi, I.
Issue Date: 2012
Citation: Journal of Chemical and Engineering Data, 2012, Vol.57, 9, pp.2528-2534
Abstract: The densities and viscosities of aqueous solutions of poly(ethylene glycol) (PEG-2000) and diammonium hydrogen citrate were determined for mass fractions from 0.05 to 0.5 at different temperatures of (298.15, 303.15, 308.15, 313.15, and 318.15) K. The density data show a linear variation with mass fraction of the polymer and salt for all temperatures. The viscosity data of PEG 2000 and diammonium hydrogen citrate solutions were correlated as a function of mass fraction, using a nonlinear equation, for the five different temperatures covered in the present work. Densities and viscosities of PEG-diammonium hydrogen citrate two-phase systems have also been measured at (298.15, 303.15, 308.15, 313.15, and 318.15) K and are correlated with composition. The tie-line lengths (TLL) of the aqueous two-phase systems have also been estimated. 2012 American Chemical Society.
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