Kalaivani, S.Srikanth, C.K.Iyyaswami, I.2026-02-052012Journal of Chemical and Engineering Data, 2012, 57, 9, pp. 2528-2534219568https://doi.org/10.1021/je300571bhttps://idr.nitk.ac.in/handle/123456789/26958The 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.Aqueous two phase systemCitrate solutionsDensity dataLinear variationMass fractionTernary mixturesTie-lineTwo phase systemsViscosity dataCitric acidViscometersPolyethylene glycols