Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Determination and correlation of liquid liquid equilibria for four binary N,N-dimethylformamide + hydrocarbon systems

Matsuda, H.[Hiroyuki], Taniguchi, D.[Daisuke], Hashimoto, J.[Junichi], Kurihara, K.[Kiyofumi], Ochi, K.[Kenji], Kojima, K.[Kazuo]
Fluid Phase Equilib. 2007, 260, 1, 81-86
ABSTRACT
Liquid liquid equilibrium measurements for four binary N,N-dimethylformamide + hydrocarbon (hexane, heptane, octane, and cyclohexane) systems were performed using a laser scattering technique. The experimentally determined cloud points were satisfactorily correlated with two local composition models (NRTL, and Tsuboka Katayama's modification of the Wilson equation). In addition, the prediction of LLE by means of the modified UNIFAC (Dortmund) model was also tested.
Compounds
# Formula Name
1 C3H7NO dimethylformamide
2 C6H14 hexane
3 C7H16 heptane
4 C8H18 octane
5 C6H12 cyclohexane
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
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Laser scattering
  • 33
  • POMD
  • 1
  • 3
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Laser scattering
  • 54
  • POMD
  • 1
  • 4
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Laser scattering
  • 55
  • POMD
  • 1
  • 5
  • Liquid-liquid equilibrium temperature, K ; Liquid mixture 1
  • Mole fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • Laser scattering
  • 49