ABSTRACT

The enthalpies of dilution (?dilHm), apparent molar volumes (V), and refractive indices (nD) of N,N'-hexamethylenebisacetamide (HMBA) in aqueous solutions of xylitol and d-mannitol were respectively determined at 298.15 K with the methods of isothermal microcalorimetry, density, and refractive-index measurements. The enthalpic interaction coefficients (h2, h3, and h4), limiting partial molar volumes (V0), and transfer partial molar volumes (?trsV0) from water to solutions and molar refractions at the sodium-D line (RD) were deduced from the experimental data in the polyols molality range (0 to 0.9) mol*kg 1. The important parameters were interpreted to understand the interactions among solvated solute molecules in HMBA xylitol (or mannitol) water ternary systems. The results indicated that the number of hydroxyls in the both polyols could evidently affect the parameters.

Compounds

#	Formula	Name
1	C10H20N2O2	N,N'-diacetyl-1,6-hexanediamine
2	C5H12O5	xylitol
3	C6H14O6	D-mannitol
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	1 4	Molar enthalpy of dilution, kJ/mol ; Liquid	Initial molality of solute, mol/kg; Liquid Final molality of solute, mol/kg; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	ISOPERIBOL:	12
POMD	1 4	Refractive index (Na D-line) ; Liquid	Molality, mol/kg - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	7
POMD	1 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	7
POMD	2 4	Refractive index (Na D-line) ; Liquid	Molality, mol/kg - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	6
POMD	2 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	6
POMD	3 4	Refractive index (Na D-line) ; Liquid	Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	6
POMD	3 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	6
POMD	2 1 4	Refractive index (Na D-line) ; Liquid	Molality, mol/kg - 1; Liquid Solvent: Molality, mol/kg - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	56
POMD	2 1 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 1; Liquid Solvent: Molality, mol/kg - 2; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	56
POMD	2 1 4	Molar enthalpy of dilution, kJ/mol ; Liquid	Initial molality of solute, mol/kg; Liquid Solvent: Molality, mol/kg - 2; Liquid Final molality of solute, mol/kg; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	ISOPERIBOL	84
POMD	3 1 4	Refractive index (Na D-line) ; Liquid	Molality, mol/kg - 1; Liquid Solvent: Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	48
POMD	3 1 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 1; Liquid Solvent: Molality, mol/kg - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Vibrating tube method	48
POMD	3 1 4	Molar enthalpy of dilution, kJ/mol ; Liquid	Initial molality of solute, mol/kg; Liquid Solvent: Molality, mol/kg - 3; Liquid Final molality of solute, mol/kg; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	ISOPERIBOL	72

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

Enthalpies of Dilution, Volumetric Properties, and Refractive Indices of N,N'-Hexamethylenebisacetamide in Aqueous Xylitol or d-Mannitol Solutions at T = 298.15 K

Dong, L.[Lina], Liu, M.[Min], Chen, A.[Aiju], Sun, D.[Dezhi]

ABSTRACT