ABSTRACT

Density and speed-of-sound data for 1-propyl-3-methylimidazolium bromide ([C3mim][Br]) + acetonitrile (MeCN), [C3mim][Br] + dimethylformamide (DMF), and [C3mim][Br] + dimethylsulfoxide (DMSO) binary mixtures in the dilute concentration region are reported at T = (288.15 to 308.15) K. From these data, apparent molar volume, isentropic compressibility, excess molar volume, and isentropic compressibility deviation values have been calculated. Negative deviations from the ideal behavior of both molar volume and isentropic compressibility have been observed for all systems investigated in this study. It has been found that deviations from ideal behavior for the [C3mim][Br] + MeCN system are larger than those for the [C3mim][Br] + DMF system which, in turn, are larger than those for the [C3mim][Br] + DMSO system. The results have been interpreted in terms of ion dipole interactions and structural factors of the ionic liquid and investigated organic solvents.

Compounds

#	Formula	Name
1	C2H3N	acetonitrile
2	C2H6OS	dimethyl sulfoxide
3	C3H7NO	dimethylformamide
4	C7H13BrN2	1-methyl-3-propylimidazolium bromide

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	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	PULSEH::UFactor:2	5
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB::UFactor:12	5
POMD	2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	PULSEH::UFactor:2	5
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB::UFactor:12	5
POMD	3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	PULSEH::UFactor:2	5
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB::UFactor:12	5
POMD	4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	PULSEH:UFactor:2	5
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	5
POMD	1 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Mass fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	PULSEH:UFactor:2	75
POMD	1 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mass fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	75
POMD	3 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Mass fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	PULSEH:UFactor:2	70
POMD	3 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mass fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	70
POMD	2 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Mass fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	PULSEH:UFactor:2	65
POMD	2 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mass fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	65

Thermodynamics Research Center / ThermoML | International Journal of Thermophysics

Volumetric and Isentropic Compressibility Behavior of Ionic Liquid, 1-Propyl-3-Methylimidazolium Bromide in Acetonitrile, Dimethylformamide, and Dimethylsulfoxide at T = (288.15 to 308.15) K

Sadeghi, R.[Rahmat], Shekaari, H.[Hemayat], Hosseini, R.[Rahim]

ABSTRACT