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

Enthalpic Interaction Coefficients of Several l-a-Amino Acids in Aqueous Sodium Chloride Solutions at 298.15 K

Palecz, B.[Bartlomiej], Dunal, J.[Joanna], Waliszewski, D.[Dariusz]
J. Chem. Eng. Data 2010, 55, 11, 5216-5218
ABSTRACT
The enthalpies of solution of l-a-isoleucine, l-a-cysteine, l-a-aspartic acid, and l-a-glutamic acid have been measured in aqueous sodium chloride solutions at 298.15 K. From the obtained experimental results the standard dissolution enthalpies of amino acids in aqueous NaCl solutions have been determined. These data were used to calculate of the heterogeneous enthalpic pair interaction coefficients based on McMillan-Mayer s theory. These values were interpreted in the terms of the hydrophobic or hydrophilic effects of the side chains of amino acids on their interactions with dissociated sodium chloride in water.
Compounds
# Formula Name
1 C6H13NO2 2-amino-3-methylpentanoic acid
2 C3H7NO2S (R)-2-amino-3-mercaptopropanoic acid
3 C4H7NO4 L-aminosuccinic acid
4 C5H9NO4 L-glutamic acid
5 H2O water
6 ClNa sodium chloride
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
  • 6
  • 5
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Molality, mol/kg - 6; Liquid
  • Mole fraction - 1; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • ISOPERIBOL
  • 6
  • POMD
  • 2
  • 6
  • 5
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Molality, mol/kg - 6; Liquid
  • Mole fraction - 2; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • ISOPERIBOL
  • 6
  • POMD
  • 3
  • 6
  • 5
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Molality, mol/kg - 6; Liquid
  • Mole fraction - 3; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • ISOPERIBOL
  • 6
  • POMD
  • 4
  • 6
  • 5
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Molality, mol/kg - 6; Liquid
  • Mole fraction - 4; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • ISOPERIBOL
  • 6