ABSTRACT

The effect of the anion, namely dicyanamide, hexafluorophosphate, trifluoroacetate, or trifluoromethanesulfonate, on the conductivity (?) of 1-N-butyl-3-N-methylimidazolium-based room-temperature ionic liquids (RTILs) was studied over the temperature range (248 to 468) K. The uncertainty in ? was estimated to be less than 0.5 %. The conductivity values obtained are well-described by the Vogel-Fulcher-Tammann equation. Additionally, densities (?) and the corresponding molar conductivities (?) are reported for the temperature range (278 to 338) K. The data for ? and the associated viscosities (?) were found to fit fractional forms of the Walden relationship.

Compounds

#	Formula	Name
1	C8H15F6N2P	1-butyl-3-methylimidazolium hexafluorophosphate
2	C10H15F3N2O2	1-butyl-3-methylimidazolium trifluoroacetate
3	C10H15N5	1-butyl-3-methylimidazolium dicyanamide
4	C9H15F3N2O3S	1-butyl-3-methylimidazolium trifluoromethanesulfonate

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	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	21
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	7
POMD	2	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	13
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	7
POMD	3	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	23
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	7
POMD	4	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	21
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:12	7

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

The Conductivity of Imidazolium-Based Ionic Liquids from (248 to 468) K. B. Variation of the Anion

Zech, O.[Oliver], Stoppa, A.[Alexander], Buchner, R.[Richard], Kunz, W.[Werner]

ABSTRACT