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Phase diagram, densities, and the refractive index of new aqueous two-phase system formed by PEO1500 + thiosulfate + H O at different temperatures

Journal of Chemical and Engineering Data, ISSN: 0021-9568, Vol: 57, Issue: 2, Page: 274-279
2012
  • 18
    Citations
  • 0
    Usage
  • 16
    Captures
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    Mentions
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Metrics Details

  • Citations
    18
    • Citation Indexes
      18
  • Captures
    16

Article Description

The present study includes measurements of the phase composition, density, and refractive index of aqueous two-phase systems of poly(ethylene oxide) 1500 (PEO1500) + sodium thiosulfate + H O at (283.15, 298.15, and 313.15) K. With the experimental results obtained, phase diagrams were established, and the influence of temperature on the densities, binodal position, and refractive index values was analyzed and discussed. The experimental tie-lines were described using the Othmer-Tobias correlation. The experimental aqueous two-phase system data were correlated with the nonrandom two-liquid (NRTL) thermodynamic model for the activity coefficients; the results were considered excellent according to a global root-mean-square deviation of 0.97 %. © 2012 American Chemical Society.

Bibliographic Details

Igor José Boggione Santos; Raquel Moreira Maduro de Carvalho; Maria C. Hespanhol da Silva; Luis Henrique Mendes da Silva

American Chemical Society (ACS)

Chemistry; Chemical Engineering

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