ABSTRACT

Densities of aqueous solutions of glycine, L -alanine, L -arginine, and L -phenylalanine containing 1-ethyl-3-methylimidazolium bromide, [EMIm]Br, have been determined at T = (298.15 and 308.15) K. From the experimental density data, the apparent molar volumes ( V ? ) and the standard partial molar volumes ( V ? 0 ) at (298.15 and 308.15) K have been calculated. The values of standard partial molar volumes of transfer ( ? tr V ? 0 ) are also obtained and are negative for glycine, L -alanine, and L -phenylalanine while positive for L -arginine. The ? tr V ? 0 values all increased with the increase of the temperature and also the [EMIm]Br content. The obtained volumetric parameters will be helpful to understand mixing e ff ects and other complex biological processes between head and side chain groups of amino acids and ionic liquid [EMIm]Br in aqueous solution

Compounds

#	Formula	Name
1	C6H11BrN2	1-ethyl-3-methylimidazolium bromide
2	C2H5NO2	2-aminoacetic acid
3	C3H7NO2	(S)-2-aminopropanoic acid
4	C6H14N4O2	L-arginine
5	C9H11NO2	L-phenylalanine
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	2 6 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Solvent: Molality, mol/kg - 1; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	28
POMD	3 6 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Solvent: Molality, mol/kg - 1; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	28
POMD	4 6 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Solvent: Molality, mol/kg - 1; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	28
POMD	5 6 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Solvent: Molality, mol/kg - 1; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	28
POMD	6 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	4

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

Effect of 1-Ethyl-3-methylimidazolium Bromide Ionic Liquid on the Volumetric Behavior of Some Aqueous L-Amino Acids Solutions

Fang, S.[Sheng], Ren, D.-H.[Da-Hai]

ABSTRACT