Thermodynamics Research Center / ThermoML | Thermochimica Acta

Enthalpies of L-threonine dissolution in some aqueous amides at 298.15 K

Smirnov, V. I.[Valeriy I.], Badelin, V. G.[Valentin G.]
Thermochim. Acta 2010, 503-504, 97-99
ABSTRACT
The enthalpies of L-threonine dissolution in aqueous formamide, N-methylformamide, N,Ndimethylformamide and N,N-dimethylacetamide, were determined by calorimetry at 298.15 K and amide mole fractions up to x2 ~ 0.3. The standard enthalpies of solution and transfer from water to the mixed solvent as well as the enthalpy coefficients of L-threonine - amide pairwise interactions were calculated. The interrelation of the enthalpies of L-threonine dissolution and transfer with the structure of amides and the composition of mixed solvent were determined.
Compounds
# Formula Name
1 C4H9NO3 L-threonine
2 CH3NO formamide
3 H2O water
4 C2H5NO N-methylformamide
5 C3H7NO dimethylformamide
6 C4H9NO N,N-dimethylethanamide
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
  • 2
  • 3
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Solvent: Molality, mol/kg - 2; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Molality, mol/kg - 1; Liquid
  • Liquid
  • Flow calorimetry
  • 11
  • POMD
  • 1
  • 4
  • 3
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Molality, mol/kg - 4; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Molality, mol/kg - 1; Liquid
  • Liquid
  • Flow calorimetry
  • 12
  • POMD
  • 5
  • 1
  • 3
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Molality, mol/kg - 5; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Molality, mol/kg - 1; Liquid
  • Liquid
  • Flow calorimetry
  • 12
  • POMD
  • 1
  • 6
  • 3
  • Molar enthalpy of solution, kJ/mol ; Liquid
  • Molality, mol/kg - 6; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Molality, mol/kg - 1; Liquid
  • Liquid
  • Flow calorimetry
  • 12