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

Isothermal Vapor-Liquid Equilibria and Excess Enthalpy Data for the Binary System (Butyric Acid + Toluene)

Negadi, L.[Latifa], Mokbel, I.[Ilham], Negadi, A.[Amina], Kaci, A. A.[Ahmed Ait], Jose, J.[Jacques], Gmehling, J.[Jurgen]
J. Chem. Eng. Data 2009, 54, 7, 2045-2048
ABSTRACT
The vapor pressures of (butyric acid + toluene) and of the pure components were measured by means of a static device at temperatures between (273 and 363) K. The data were correlated with the Antoine equation. From these data, excess Gibbs functions were calculated for several constant temperatures and fitted to a fourth-order Redlich-Kister equation. The system shows positive deviation from ideality. Additionally, molar excess enthalpies, HE, for the binary (butyric acid + toluene) system have been measured at 323.15 K using an isothermal flow calorimeter.
Compounds
# Formula Name
1 C4H8O2 butanoic acid
2 C7H8 toluene
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
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 20
  • POMD
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 26
  • POMD
  • 1
  • 2
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Flow calorimetry
  • 21
  • POMD
  • 1
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 132