Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Phase equilibrium properties of binary aqueous solutions of benzylamine, 1,2-bis(2-aminoethoxy)ethane, or 2-[2-(dimethylamino)ethoxy]ethanol

Belabbaci, A.[Aouicha], Mokbel, I.[Ilham], Kaci, A. A.[Ahmed Ait], Jose, J.[Jacques], Negadi, L.[Latifa]
J. Chem. Thermodyn. 2011, 43, 1, 17-21
ABSTRACT
The vapour pressures of (benzylamine + water), {1,2-bis(2-aminoethoxy)ethane + water}, or {2-[2- (dimethylamino)ethoxy]ethanol + water} binary mixtures, and pure 2-[2-(dimethylamino)ethoxy]ethanol component were measured by means of two static devices at temperatures between (283.15 and 363.15 (or 323.15)) K. The data were correlated with the Antoine equation. From these data, excess Gibbs functions (GE) were calculated for several constant temperatures and fitted to a fourth-order Redlich-Kister equation using the Barker's method. The (benzylamine + water) binary mixture exhibits positive deviations in GE for (303.15 less than T/K less than 323.15) and a sinusoidal shape in GE for T greater than 323.15 K over the whole composition range. The aqueous 1,2-bis(2-aminoethoxy)ethane or {2-[2-(dimethylamino)ethoxy]ethanol + water} solutions exhibit negative deviations in GE for all investigated temperatures over the whole composition range.
Compounds
# Formula Name
1 C7H9N benzylamine
2 C6H16N2O2 1,2-bis(2-aminoethoxy)ethane
3 C6H15NO2 2-(2-dimethylaminoethoxy)ethanol
4 H2O water
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
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 10
  • POMD
  • 2
  • 4
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 2; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 72
  • POMD
  • 1
  • 4
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 81
  • POMD
  • 3
  • 4
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 3; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 54