Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Isopiestic determination of the osmotic coefficient and vapour pressure of N-R-4-(N,N-dimethylamino)pyridinium tetrafluoroborate (R = C4H9, C5H11, C6H13) in the ethanol solution at T = 298.15 K

Sardroodi, J. J.[Jaber Jahanbin], Atabay, M.[Maryam], Azamat, J.[Jafar]
J. Chem. Thermodyn. 2012, 49, 70-74
ABSTRACT
Osmotic coefficients of the solutions of room temperature ionic liquid N-R-4-(N,N-dimethylamino)pyridinium tetrafluoroborate (R = C4H9, C5H11, C6H13) in ethanol have been measured at T = 298.15 K by the isopiestic method. The experimental osmotic coefficients have been correlated using the ion interaction model of Pitzer, electrolyte non-random two liquid (e-NRTL) model of Chen, non-random factor (NRF) and a fourth-order polynomial in terms of molality. The vapour pressures of the solutions studied have been evaluated from the osmotic coefficients.
Compounds
# Formula Name
1 C11H19BF4N2 4-(dimethylamino)-1-butylpyridinium tetrafluoroborate
2 C12H21BF4N2 4-(dimethylamino)-1-pentylpyridinium tetrafluoroborate
3 C13H23BF4N2 4-(dimethylamino)-1-hexylpyridinium tetrafluoroborate
4 C2H6O ethanol
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
  • 4
  • 1
  • Osmotic coefficient ; Liquid
  • Molality, mol/kg - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • ISOPIE
  • 27
  • POMD
  • 4
  • 2
  • Osmotic coefficient ; Liquid
  • Molality, mol/kg - 2; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • ISOPIE
  • 15
  • POMD
  • 4
  • 3
  • Osmotic coefficient ; Liquid
  • Molality, mol/kg - 3; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • ISOPIE
  • 17