Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Isothermal vapour pressures and excess functions of 3,5- and 2,6-dimethylpyridine with toluene measurement and prediction

Ben-makhlouf-Hakem, H.[Hamama], Ait-Kaci, A.[Ahmed], Jose, J.[Jacques]
Fluid Phase Equilib. 2006, 242, 1, 1-9
ABSTRACT
The vapour pressures of liquid (3,5; 2,6)-dimethylpyridine with toluene mixtures were measured by a static method in the range of 263.15-353.15 K. The pure components vapour pressures data and those of the mixtures were correlated with the Antoine equation. The excess enthalpies were measured at 303.15 K, by means of an isothermal calorimeter (C80 SETARAMmodel). The molar excess Gibbs energies, calculated from the vapour-liquid equilibrium data and the molar excess enthalpies compared satisfactorily with group contribution method (DISQUAC).
Compounds
# Formula Name
1 C7H9N 2,6-dimethylpyridine
2 C7H9N 3,5-dimethylpyridine
3 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
  • CCELL:UFactor:2
  • 10
  • POMD
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • CCELL:UFactor:2
  • 10
  • POMD
  • 3
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • CCELL:UFactor:2
  • 10
  • POMD
  • 3
  • 2
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Mole fraction - 2; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Calvet calorimetry
  • 7
  • POMD
  • 3
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 2; Liquid
  • Liquid
  • Gas
  • CCELL:UFactor:2
  • 70
  • POMD
  • 1
  • 3
  • Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Calvet calorimetry
  • 13
  • POMD
  • 1
  • 3
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Mole fraction - 1; Liquid
  • Liquid
  • Gas
  • CCELL:UFactor:2
  • 90