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

Liquid-Liquid Equilibria for the Binary Systems (Water + Di-n-butyl Phthalate), (Water + Di-ethyl Phthalate), and (Water + Di-isobutyl Hexahydrophthalate) from (298.2 to 348.2) K

Hu, C.[Chaoquan], Gao, Z.[Zhenghong], Li, J.
J. Chem. Eng. Data 2006, 51, 2, 471-474
ABSTRACT
Liquid-liquid equilibrium data for the binary systems water + di-n-butyl phthalate, water + di-ethyl phthalate, and water + di-isobutyl hexahydrophthalate in the temperature range of (298.2 to 348.2) K at normal pressure were determined. The organic compound concentrations in the aqueous phase were measured by the high-performance liquid chromatograph, while the water concentrations in the organic phase were measured by the Karl Fischer equipment. The NRTL and UNIQUAC models, of which the interaction parameters were expressed as a function of the temperature from (298.2 to 348.2) K, were used to correlate the obtained liquid-liquid equilibrium data. The results show that the correlation accuracy of the UNIQUAC model is better than the NRTL model at the studied temperatures.
Compounds
# Formula Name
1 H2O water
2 C16H22O4 dibutyl phthalate
3 C12H14O4 diethyl phthalate
4 C16H28O4 diisobutyl hexahydrophthalate
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
  • 2
  • 1
  • Mole fraction - 2 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • OTHER:UFactor:2:sMethod:UV Spectrum
  • 4
  • POMD
  • 2
  • 1
  • Mole fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • TITR:UFactor:2
  • 4
  • POMD
  • 3
  • 1
  • Mole fraction - 3 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • OTHER:UFactor:2:sMethod:UV Spectrum
  • 4
  • POMD
  • 3
  • 1
  • Mole fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • TITR:UFactor:2
  • 4
  • POMD
  • 1
  • 4
  • Mole fraction - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • TITR:UFactor:4
  • 4
  • POMD
  • 1
  • 4
  • Mole fraction - 4 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 2
  • Liquid mixture 1
  • OTHER:UFactor:2:sMethod:UV Spectrum
  • 4