Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Phase Diagram Data for Several Salt + Salt Aqueous Biphasic Systems at 298.15 K

Deng, Y.[Yuefeng], Chen, J.[Ji], Zhang, D.[Dongli]
J. Chem. Eng. Data 2007, 52, 4, 1332-1335
ABSTRACT
Phase diagrams corresponding to aqueous biphasic systems of salt (the organic ionic liquid of salts [C4mim]Cl, [C6mim]Cl, and [C8mim]Cl) + salt (K3PO4, K2CO3) + water were determined at 298.15 K. The binodal curve was fitted to the Merchuk equation. Tie lines assigned from mass phase ratios according to the lever arm rule were satisfactorily described using the Othmer-Tobias and Bancroft equations.
Compounds
# Formula Name
1 K3O4P tripotassium phosphate
2 CK2O3 potassium carbonate
3 C12H23ClN2 1-methyl-3-octylimidazolium chloride
4 C10H19ClN2 1-hexyl-3-methylimidazolium chloride
5 C8H15ClN2 1-butyl-3-methylimidazolium chloride
6 H2O water
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
  • 6
  • 1
  • 5
  • Mass fraction - 5 ; 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
  • TITR:UFactor:2
  • 25
  • POMD
  • 2
  • 6
  • 5
  • Mass fraction - 5 ; Liquid mixture 1
  • Mass fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • TITR:UFactor:2
  • 14
  • POMD
  • 6
  • 1
  • 4
  • Mass fraction - 4 ; 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
  • TITR:UFactor:2
  • 22
  • POMD
  • 2
  • 6
  • 4
  • Mass fraction - 4 ; Liquid mixture 1
  • Mass fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • TITR:UFactor:2
  • 24
  • POMD
  • 6
  • 1
  • 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
  • TITR:UFactor:2
  • 21
  • POMD
  • 2
  • 6
  • 3
  • Mass fraction - 3 ; Liquid mixture 1
  • Mass fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • TITR:UFactor:2
  • 23