ABSTRACT

The densities of binary and ternary mixtures were measured for the system 1-ethyl-3-methylimidazolium bis(perfluoroethylsulfonyl)imide ([EMIM]+[BETI]-) + methanol or + acetone and [EMIM]+[BETI]- + methanol + acetone, respectively, at T = (298.15, 303.15, and 313.15) K, and the speed of sound data for the binary system 1-ethyl-3-methylimidazolium diethyleneglycol monomethylethersulfate ([EMIM]+[CH3(OCH2CH2)2OSO3]-) + methanol were measured at T = 298.15 K. The excess molar volumes were calculated from the experimental densities and were fitted to the Redlich-Kister equation for the binary system. The excess molar volumes, VmE, for the binary system ([EMIM]+[BETI]- + methanol) were positive for low mole fractions of methanol, and for the binary system ([EMIM]+[BETI]- + acetone), excess molar volumes were negative throughout the whole composition range. The ternary excess molar volumes were negative for all three temperatures. The isentropic compressibility for the binary system ([EMIM]+[CH3(OCH2CH2)2OSO3]- + methanol) was negative over the entire composition range. The results have been interpreted in terms of the intermolecular interactions between the ionic liquid and the organic solvents.

Compounds

#	Formula	Name
1	C11H22N2O6S	1-ethyl-3-methylimidazolium 2-(2-methoxyethoxy) ethylsulfate
2	C10H11F10N3O4S2	1-ethyl-3-methylimidazolium 1,1,2,2,2-pentafluoro-N-[(pentafluoroethyl)sulfonyl]ethanesulfonamide
3	CH4O	methanol
4	C3H6O	acetone

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	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	4
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	3
POMD	3 2	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	33
POMD	4 2	Mass density, kg/m3 ; Liquid	Mole fraction - 4; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	42
POMD	3 1	Speed of sound, m/s ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	FPINT:UFactor:2	12
POMD	3 4 2	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid Mole fraction - 4; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	42

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

Density, Speed of Sound, and Derived Thermodynamic Properties of Ionic Liquids [EMIM]+[BETI]- or ([EMIM]+[CH3(OCH2CH2)2OSO3]- + Methanol or + Acetone) at T = (298.15 or 303.15 or 313.15) K

Deenadayalu, N.[Nirmala], Bhujrajh, P.[Pravena]

ABSTRACT