ABSTRACT

Enthalpies of dilution (DdilHm) of N,N0-hexamethylenebisacetamide (HMBA) in aqueous solutions of sodium chloride (NaCl) were determined at 298.15 K by isothermal titration microcalorimetry. Densities (q) of the ternary homogeneous systems were also measured with a quartz vibrating-tube densimeter. The homogeneous enthalpic interaction coefficients have been calculated according to the excess enthalpy concept based on the calorimetric data. Apparent molar volumes (Vu) of the ternary systems were calculated from the data of densities, which have been used to deduce limiting partial molar volumes of HMBA (V0 u) and limiting partial molar volumes of transfer (DtrsV0 u) from water to sodium chloride solutions at different concentrations. The results are discussed in terms of weak interactions of the diluted component with other species.

Compounds

#	Formula	Name
1	C10H20N2O2	N,N'-diacetyl-1,6-hexanediamine
2	ClNa	sodium chloride
3	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	1 2 3	Molar enthalpy of dilution, kJ/mol ; Liquid	Solvent: Molality, mol/kg - 2; Liquid Initial molality of solute, mol/kg; Liquid Final molality of solute, mol/kg; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Isothermal Titration Calorimetry	320
POMD	1 2 3	Mass density, kg/m3 ; Liquid	Solvent: Molality, mol/kg - 2; Liquid Molality, mol/kg - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	90
POMD	1 3	Molar enthalpy of dilution, kJ/mol ; Liquid	Final molality of solute, mol/kg; Liquid	Initial molality of solute, mol/kg; Liquid Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Isothermal Titration Calorimetry	40
POMD	1 3	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	10

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Enthalpies of dilution and volumetric properties of N,N0-hexamethylenebisacetamide in aqueous solutions of sodium chloride at 298.15 K

Li, H.[Hui], Chi, C.-J.[Chun-Jing], Liu, M.[Min], Sun, D.-Z.[De-Zhi], Liu, J.-F.[Ji-Feng]

ABSTRACT