Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Thermodynamic study of aqueous two phase systems for some aliphatic alcohols + sodium thiosulfate + water

Nemati-Knade, E.[Ebrahim], Shekaari, H.[Hemayat], Jafari, S. A.[Safar A.]
Fluid Phase Equilib. 2012, 321, 64-72
ABSTRACT
The aqueous two phase systems for 1-propanol, 2-propanol, 2-methyl-2-propanol, 2-butanol or ethanol + sodium thiosulfate + water ternary systems at T = 298.15 K were studied thermodynamically, and an empirical three parameter equation was successfully used for the correlation of binodal data. The phase-separation ability of the studied systems was discussed on the basis of the solubility and boiling point of the constitutive alcohol. Furthermore, the effect of temperature on the phase-separation ability of the studied systems was discussed in terms of the experimental cloud-point data as a function of alcohol mole fraction at the temperature ranges of T = (293.15 323.15) K at 5 K intervals. Additionally, the segment based Wilson equation was generalized to represent the mixed organic aqueous solvent electrolyte systems and successfully used for the correlation of binary and ternary data, and the restricted binary interaction parameters were also reported. The result of the correlation using generalized Wilson model was also compared with the e-NRTL model.
Compounds
# Formula Name
1 C3H8O propan-1-ol
2 H2O water
3 Na2O3S2 sodium thiosulfate
4 C3H8O propan-2-ol
5 C4H10O 2-methylpropan-2-ol
6 C4H10O butan-2-ol
7 C2H6O ethanol
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • 2
  • 3
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 27
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Solvent: Amount ratio of component to other component of binary solvent - 3; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 8
  • POMD
  • 1
  • 2
  • 3
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 3 ; Liquid mixture 2
  • Mass fraction - 1 ; Liquid mixture 2
  • Mass fraction - 1; Liquid mixture 1
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • Titration method
  • Titration method
  • 6
  • POMD
  • 4
  • 2
  • 3
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 4; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 26
  • POMD
  • 4
  • 2
  • 3
  • Mole fraction - 4 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Solvent: Amount ratio of component to other component of binary solvent - 3; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 8
  • POMD
  • 4
  • 2
  • 3
  • Mass fraction - 4 ; Liquid mixture 2
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 4 ; Liquid mixture 1
  • Mass fraction - 3; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Titration method
  • Titration method
  • Titration method
  • 6
  • POMD
  • 5
  • 2
  • 3
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 5; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 20
  • POMD
  • 5
  • 2
  • 3
  • Mole fraction - 5 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Solvent: Amount ratio of component to other component of binary solvent - 3; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 8
  • POMD
  • 5
  • 2
  • 3
  • Mass fraction - 3 ; Liquid mixture 2
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 5 ; Liquid mixture 1
  • Mass fraction - 5; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Titration method
  • Titration method
  • Titration method
  • 6
  • POMD
  • 6
  • 2
  • 3
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 6; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 17
  • POMD
  • 6
  • 2
  • 3
  • Mole fraction - 6 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Solvent: Amount ratio of component to other component of binary solvent - 3; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 8
  • POMD
  • 6
  • 2
  • 3
  • Mass fraction - 6 ; Liquid mixture 2
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 6 ; Liquid mixture 1
  • Mass fraction - 3; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Titration method
  • Titration method
  • Titration method
  • 6
  • POMD
  • 7
  • 2
  • 3
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 7; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 22
  • POMD
  • 7
  • 2
  • 3
  • Mole fraction - 7 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Solvent: Amount ratio of component to other component of binary solvent - 3; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Titration method
  • 8
  • POMD
  • 7
  • 2
  • 3
  • Mass fraction - 3 ; Liquid mixture 2
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 7 ; Liquid mixture 1
  • Mass fraction - 7; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Titration method
  • Titration method
  • Titration method
  • 6