ABSTRACT

Viscosities and refractive indices have been determined for (water + 1-butyl-3-methylimidazolium tetrafluoroborate) and (water + 1- butyl-2,3-dimethylimidazolium tetrafluoroborate) mixtures at 298.15 K, over the whole composition range. The refractive indices were compared with the predictions of the Lorentz Lorenz, Wiener, and Gladstone Dale equations. Viscosity deviations (Dg) and refractive index deviations (DnD) have been calculated and fitted to the Redlich Kister polynomial equations. DnD are positive whereas Dg are negative over the entire mixture composition for the two salts. The influence of the structure of imidazolium cation on the above physicochemical properties was discussed.

Compounds

#	Formula	Name
1	C8H15BF4N2	1-butyl-3-methylimidazolium tetrafluoroborate
2	H2O	water
3	C9H17BF4N2	1-butyl-2,3-dimethylimidazolium tetrafluoroborate

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	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	1	Viscosity, Pa*s ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Capillary tube (Ostwald; Ubbelohde) method	1
POMD	1	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Vibrating tube method	1
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	3	Viscosity, Pa*s ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Capillary tube (Ostwald; Ubbelohde) method	1
POMD	3	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid	Vibrating tube method	1
POMD	2 1	Viscosity, Pa*s ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	10
POMD	2 1	Refractive index (Na D-line) ; Liquid	Mole fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	10
POMD	2 1	Mass density, kg/m3 ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	10
POMD	2 3	Viscosity, Pa*s ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	11
POMD	2 3	Refractive index (Na D-line) ; Liquid	Mole fraction - 3; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	11
POMD	2 3	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Vibrating tube method	11

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Viscosities and refractive indices of binary mixtures of 1-butyl-3-methylimidazolium tetrafluoroborate and 1-butyl-2,3-dimethylimidazolium tetrafluoroborate with water at 298 K

Malham, I. B.[Ibrahim Bou], Turmine, M.[Mireille]

ABSTRACT