ABSTRACT

The apparent molar volumes for glycine (Gly), l-alanine (Ala), phenylalanine (Phe), and glycylglycine (Gly-Gly) in 0.10 m aqueous d-galactose solutions have been determined from density measurements at (298.15, 303.15, 308.15, and 313.15) K. The data for were utilized to estimate the partial molar volume at infinite dilution , and experimental slope . The transfer volume, , and hydration number, (n H) were also evaluated. The viscosity data were used to evaluate A- and B-coefficients of the Jones Dole equation, the free energy of activation of viscous flow per mole of the solvent and the solute . The molar refractivity (R D) was calculated from refractive index data. The results were discussed in terms of hydrophilic ionic, hydrophilic hydrophobic, and hydrophobic hydrophobic interactions, and structure-making/-breaking ability of the solute (AAs/peptide) in aqueous d-galactose solutions.

Compounds

#	Formula	Name
1	C2H5NO2	2-aminoacetic acid
2	C3H7NO2	(S)-2-aminopropanoic acid
3	C9H11NO2	(.+-.)-phenylalanine
4	C4H8N2O3	glycylglycine
5	C6H12O6	(+)-galactose
6	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	5 6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Molality, mol/kg - 5; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	4
POMD	5 6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Molality, mol/kg - 5; Liquid	Liquid	Standard Abbe refractometry	5
POMD	5 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Molality, mol/kg - 5; Liquid	Liquid	Pycnometric method	5
POMD	1 5 6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	24
POMD	1 5 6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Standard Abbe refractometry	24
POMD	1 5 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Pycnometric method	24
POMD	2 5 6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	24
POMD	2 5 6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Standard Abbe refractometry	24
POMD	2 5 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Pycnometric method	24
POMD	5 3 6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	20
POMD	5 3 6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Standard Abbe refractometry	20
POMD	5 3 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Pycnometric method	20
POMD	5 4 6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	24
POMD	5 4 6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Standard Abbe refractometry	24
POMD	5 4 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 5; Liquid	Liquid	Pycnometric method	24

Thermodynamics Research Center / ThermoML | International Journal of Thermophysics

Physicochemical Behavior of Some Amino Acids/Glycylglycine in Aqueous D-Galactose Solutions at Different Temperatures

Ali, A.[Anwar], Patel, R.[Rajan], Shahjahan, Ansari, N. H.[Nizamul Haque]

ABSTRACT