ABSTRACT

Ultrasonic speeds and density data of 4-aminobutyric acid in 0.05 M, 0.10 M, and 0.15 M aqueous metformin hydrochloride (MFHCl) solutions are measured at 308.15 K, 313.15 K, and 318.15 K. The isentropic compressibility (kS), the change in isentropic compressibility ( kS), the relative change in isentropic compressibility ( kS/k0 S), the apparent molal compressibility (ko), the limiting apparent molal compressibility (k0 o), the transfer limiting apparent molal compressibility ( k0 o), the hydration number (nH), and the pair and triplet interaction parameters (kAH, kAHH) are estimated. The above parameters are used to interpret the solute solute and solute solvent interactions of 4-aminobutyric acid in aqueous MFHCl solutions.

Compounds

#	Formula	Name
1	C4H9NO2	4-aminobutanoic acid
2	H2O	water
3	C4H12ClN5	N,N-dimethylimidodicarbonimidic diamide hydrochloride

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	2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	LVPAI::UFactor:2	3
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	PYCNOM::UFactor:4	3
POMD	1 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	LVPAI:UFactor:2	15
POMD	1 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	PYCNOM:UFactor:4	15
POMD	3 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	LVPAI:UFactor:2	9
POMD	3 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	PYCNOM:UFactor:4	9
POMD	1 3 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	LVPAI:UFactor:2	72
POMD	1 3 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	PYCNOM:UFactor:4	72

Thermodynamics Research Center / ThermoML | International Journal of Thermophysics

Ultrasonic Studies of 4-Aminobutyric Acid in Aqueous Metformin Hydrochloride Solutions at Different Temperatures

Rajagopal, K., Jayabalakrishnan, S. S.

ABSTRACT