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

Liquid Liquid Equilibria of Benzene + n-Heptane + N,N-Dimethylformamide and Benzene + n-Heptane + N,N-Dimethylformamide + Ammonium Thiocyanate

Yang, X.[Xiaoguang], Song, Q.[Qilong], Dong, H.[Hongxing], Li, Y.[Yongrui]
J. Chem. Eng. Data 2014, 59, 1, 22-27
ABSTRACT
The liquid liquid equilibrium data for the systems including benzene + n-heptane + N,N-dimethylformamide (DMF) and benzene + n-heptane + DMF + ammonium thiocyanate were measured experimentally at 298.15 K or 303.15 K and atmospheric pressure. The selectivity coefficients of the complex solvent (DMF + NH4SCN) are generally higher than those of DMF, derived from the tie-line data. For the high selectivity that is from 15.03 to 69.90 at 298.15 K or from 15.04 to 61.02 at 303.15 K, the complex solvent, DMF + NH4SCN, could be used as an extracting agent to separate benzene from n-heptane.
Compounds
# Formula Name
1 C6H6 benzene
2 C7H16 heptane
3 C3H7NO dimethylformamide
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
  • 3
  • 1
  • 2
  • Mass fraction - 2 ; Liquid mixture 1
  • Mass fraction - 2 ; Liquid mixture 2
  • Mass fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 2
  • Mass fraction - 1; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • Chromatography
  • Chromatography
  • Chromatography
  • 8