ABSTRACT

The ionicity of ionic liquids (IL) is related to the ionic nature of these fluids and is a useful indicator of the characteristic properties of a given ionic liquid. In this work, we studied the effects caused by the addition of different inorganic salts (IS), on the ionicity of the ionic liquid 1-ethyl-3-methylimidazolium acetate. The solubility of different inorganic salts, based on the ammonium and the sodium cations, in this IL at room temperature was experimentally determined. Thermophysical properties, such as viscosity, density, conductivity, and refractive indexes, of the 1-ethyl-3-methylimidazolium acetate + inorganic salt mixtures were measured in different concentrations of IS, and the ionicity of the systems was calculated. The results showed that when ammonium-based salts are used, the ionicity of the ionic liquid can be increased, leading to the formation of high ionicity ionic liquids.

Compounds

#	Formula	Name
1	C2H7NO2	ammonium acetate
2	ClH4N	ammonium chloride (NH4Cl)
3	C2H9NO3S	ammonium ethanesulfonate
4	C2H3NaO2	sodium ethanoate
5	CNNaS	sodium thiocyanate
6	C8H14N2O2	1-ethyl-3-methylimidazolium acetate

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	6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	6
POMD	6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	6
POMD	6	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	CDM210 radiometer analytical conductivimeter	6
POMD	6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	6
POMD	1 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	42
POMD	1 6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	42
POMD	1 6	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	CDM210 radiometer analytical conductivimeter	42
POMD	1 6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	42
POMD	2 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	36
POMD	2 6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	36
POMD	2 6	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	CDM210 radiometer analytical conductivimeter	36
POMD	2 6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	36
POMD	3 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	24
POMD	3 6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	24
POMD	3 6	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	CDM210 radiometer analytical conductivimeter	24
POMD	3 6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	24
POMD	4 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	24
POMD	4 6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	24
POMD	4 6	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	CDM210 radiometer analytical conductivimeter	24
POMD	4 6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	24
POMD	5 6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	12
POMD	5 6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	12
POMD	5 6	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid	Liquid	CDM210 radiometer analytical conductivimeter	12
POMD	5 6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	12

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

Influence of Different Inorganic Salts on the Ionicity and Thermophysical Properties of 1-Ethyl-3-methylimidazolium Acetate Ionic Liquid

Oliveira, F. S.[Filipe S.], Rebelo, L. P. N.[Luis P. N.], Marrucho, I. M.[Isabel M.]

ABSTRACT