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Ionic Liquids Database	- (ILThermo)

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Property Data of Pure Ionic Liquids

Search by Property

Presentation Logic

This page has a hierarchical structure: a new selection made in any displayed table results in an update of all content below the table. Upon selection of a specific physical property from the following table, the browser displays the list of ionic liquids for which the selected property is available. Selection of an ionic liquid from the list displays the information on the ionic pair constituting the selected ionic liquid, followed by the list of datasets available. Finally, selection of a specific dataset presents a detailed data summary at the bottom of the page.

Available Properties for Ionic Liquids

1-23 of 23

Select	Property Category	Description
	Electrical Conductivity	Electrical Conductivity, S/m
	Heat Capacity and Derived Properties	Enthalpy Function (H(T)-H(0))/T, J/K/mol
	Heat Capacity and Derived Properties	Heat Capacity at Constant Pressure, J/K/mol
	Heat Capacity and Derived Properties	Heat Capacity at Vapor Saturation Pressure, J/K/mol
	Heat Capacity and Derived Properties	Standard Enthalpy H(T)-H(0), kJ/mol
	Heat Capacity and Derived Properties	Standard Entropy, J/K/mol
	Phase Transition Properties	Enthalpy of Transition or Fusion, kJ/mol
	Phase Transition Properties	Glass Transition Temperature, K
	Phase Transition Properties	Normal Melting Temperature, K
	Phase Transition Properties	Solid-Liquid Equilibrium Temperature, K
	Phase Transition Properties	Solid-Solid Phase Transition Temperature, K
	Phase Transition Properties	Triple Point Temperature, K
	Refraction, Surface Tension, and Speed of Sound	Refractive Index (Na D-line), Dimensionless
	Refraction, Surface Tension, and Speed of Sound	Speed of Sound, m/s
	Refraction, Surface Tension, and Speed of Sound	Surface Tension, N/m
	Transport Properties	Kinematic Viscosity, m**2/s
	Transport Properties	Self Diffusion Coefficient, m2/s/109
	Transport Properties	Thermal Conductivity, W/m/K
	Transport Properties	Thermal Diffusivity, m**2/s
	Transport Properties	Viscosity, Pa s
	Vapor Pressure, Boiling Temperature, and Azeotropic T & P	Phase Boundary Pressure, kPa
	Volumetric Properties	Molar Volume, m**3/mol
	Volumetric Properties	Specific Density, kg/m**3

1-23 of 23

Ionic Liquid(s) with the Property - Electrical Conductivity, S/m

Next 14

Formula	Ionic Liquid Names	References	Data Points
C7H9F6N3O4S2	1,3-dimethylimidazolium 1,1,1-trifluoro-N-[(trifluoromethyl)sulfonyl]methanesulfonamide; 1,3-dimethylimidazolium bis(trifluoromethylsulfonyl)imide; 1,3-dimethylimidazolium bis[(trifluoromethyl)sulfonyl]amide; 1,3-dimethylimidazolium bis[(trifluoromethyl)sulfonyl]imide	2	19
C11H20F6N2O4S2	1-butyl-1-methylpyrrolidinium 1,1,1-trifluoro-N-[(trifluoromethyl)sulfonyl]methanesulfonamide; 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide; 1-butyl-1-methylpyrrolidinium bis[(trifluoromethyl)sulfonyl]amide; 1-butyl-1-methylpyrrolidinium bis[(trifluoromethyl)sulfonyl]imide	2	11
C10H15F6N3O4S2	1-butyl-3-methylimidazolium 1,1,1-trifluoro-N-[(trifluoromethyl)sulfonyl]methanesulfonamide; 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide; 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]amide; 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide	3	27
C12H15F10N3O4S2	1-butyl-3-methylimidazolium bis(perfluoroethylsulfonyl)imide	1	10
C10H15N5	1-butyl-3-methylimidazolium dicyanamide	1	1
C8H15F6N2P	1-butyl-3-methylimidazolium hexafluorophosphate; 1-n-butyl-3-methylimidazolium hexafluorophosphate	4	67
C8H15BF4N2	1-butyl-3-methylimidazolium tetrafluoroborate; 1-n-butyl-3-methylimidazolium tetrafluoroborate; [BMIM][BF4]	4	13
C9H15F3N2O3S	1-butyl-3-methylimidazolium triflate; 1-butyl-3-methylimidazolium trifluoromethanesulfonate	1	10
C10H15F3N2O2	1-butyl-3-methylimidazolium trifluoroacetate	1	10
C11H14F6N2O4S2	1-butylpyridinium 1,1,1-trifluoro-N-[(trifluoromethyl)sulfonyl]methanesulfonamide; 1-butylpyridinium bis(trifluoromethylsulfonyl)imide; 1-butylpyridinium bis[(trifluoromethyl)sulfonyl]amide; 1-butylpyridinium bis[(trifluoromethyl)sulfonyl]imide	1	10
C16H23F6N3O4S2	1-decyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide	1	1
C8H11F6N3O4S2	1-ethyl-3-methylimidazolium 1,1,1-trifluoro-N-[(trifluoromethyl)sulfonyl]methanesulfonamide; 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide; 1-ethyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]amide; 1-ethyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide	3	27
C8H16N2O4S	1-ethyl-3-methylimidazolium ethyl sulfate	2	37
C6H11BF4N2	1-ethyl-3-methylimidazolium tetrafluoroborate; [EMIM][BF4]	4	40
C12H19F6N3O4S2	1-hexyl-3-methylimidazolium 1,1,1-trifluoro-N-[(trifluoromethyl)sulfonyl]methanesulfonamide; 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide; 1-hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]amide; 1-hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide	6	42
C10H19F6N2P	1-hexyl-3-methylimidazolium hexafluorophosphate	1	1
C10H19BF4N2	1-hexyl-3-methylimidazolium tetrafluoroborate	1	1
C10H18F6N2O4S2	1-methyl-1-propylpyrrolidinium 1,1,1-trifluoro-N-[(trifluoromethyl)sulfonyl]methanesulfonamide; 1-methyl-1-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide; 1-methyl-1-propylpyrrolidinium bis[(trifluoromethyl)sulfonyl]amide; 1-methyl-1-propylpyrrolidinium bis[(trifluoromethyl)sulfonyl]imide	1	1
C12H23F6N2P	1-methyl-3-octylimidazolium hexafluorophosphate; 1-octyl-3-methylimidazolium hexafluorophosphate	2	80
C12H23BF4N2	1-methyl-3-octylimidazolium tetrafluoroborate; 1-octyl-3-methylimidazolium tetrafluoroborate	1	81

Next 14

Ionic pair constituting this ionic liquid - 1,3-dimethylimidazolium bis[(trifluoromethyl)sulfonyl]imide

Formula	Ionic Charge	Ionic Names	Structure
C5H9N2	1	1,3-dimethylimidazolium	Image
C2F6NO4S2	-1	bis[(trifluoromethyl)sulfonyl]imide	Image

References and Data Sets

1-2 of 2

Select	Reference Title	Sample No	Data Set	Year Pub.	Authors
	Physicochemical Properties and Structures of Room Temperature Ionic Liquids. 2. Variation of Alkyl Chain Length in Imidazolium Cation	1	2	2005	Tokuda, H.; Hayamizu, K.; Ishii, K.; Susan, M. A. B. H.; Watanabe, M.
	How Ionic Are Room-Temperature Ionic Liquids? An Indicator of the Physicochemical Properties	1	2	2006	Tokuda, H.; Tsuzuki, S.; Susan, M. A. B. H.; Hayamizu, K.; Watanabe, M.

Data Summary

Property: Electrical Conductivity, S/m

Compound:

Name -

1,3-dimethylimidazolium bis[(trifluoromethyl)sulfonyl]imide

Formula -

C7H9F6N3O4S2

Sample No 1

Source: Synthesized by the author

Initial Purity: Not stated

Purification: Treatment with a chemical reagent, Dried by heating in a vacuum

Final Purity: .001g%

Purity Analysis: Karl Fischer titration

Measurement Method: Hewlett Packard 4192A LF impedance analyzer

Selected Data Set No. 2

(Property/Uncertainty - Electrical Conductivity, S/m )

Condition(s): Single phase system at a fixed pressure of 1 atm

Note(s):

The reported data values were calculated from a smoothing function fit by the author

1-12 of 12

Temperature, K

Electrical Conductivity, S/m

Liquid

Uncertainty Assigned by ILThermo

About Assigned Uncertainty

263.15

0.1796

0.0072

273.15

0.3150

0.013

283.15

0.5011

0.020

293.15

0.7401

0.030

303.15

1.032

0.041

313.15

1.374

0.055

323.15

1.764

0.071

333.15

2.196

0.088

343.15

2.667

0.11

353.15

3.172

0.13

363.15

3.706

0.15

373.15

4.264

0.17

1-12 of 12

Selected Reference

Year Pub.

Authors

Source

2005

Tokuda, H.; Hayamizu, K.; Ishii, K.; Susan, M. A. B. H.; Watanabe, M.

J. Phys. Chem. B 109 (13), 6103-6110

Title:

Physicochemical Properties and Structures of Room Temperature Ionic Liquids. 2. Variation of Alkyl Chain Length in Imidazolium Cation

Keywords:

Abstract:

The alkyl chain length of 1-alkyl-3-methylimidazolium bis(trifluoromethane sulfonyl)imide ([Rmim][(CF3- SO2)2N], R = methyl (m), ethyl (e), butyl (b), hexyl (C6), and octyl (C8)) was varied to prepare a series of room-temperature ionic liquids (RTILs), and the thermal behavior, density, viscosity, self-diffusion coefficients of the cation and anion, and ionic conductivity were measured over a wide temperature range. The selfdiffusion coefficient, viscosity, ionic conductivity, and molar conductivity change with temperature following the Vogel-Fulcher-Tamman equation, and the density shows a linear decrease. The pulsed-field-gradient spin-echo NMR method reveals a higher self-diffusion coefficient for the cation compared to that for the anion over a wide temperature range, even if the cationic radius is larger than that of the anion. The summation of the cationic and anionic diffusion coefficients for the RTILs follows the order [emim][(CF3SO2)2N] greater than [mmim][(CF3SO2)2N] greater than [bmim][(CF3SO2)2N] greater than [C6mim][(CF3SO2)2N] greater than [C8mim][(CF3SO2)2N], which greatly contrasts to the viscosity data. The ratio of molar conductivity obtained from impedance measurements to that calculated by the ionic diffusivity using the Nernst-Einstein equation quantifies the active ions contributing to ionic conduction in the diffusion components, in other words, ionicity of the ionic liquids. The ratio decreases with increasing number of carbon atoms in the alkyl chain. Finally, a balance between the electrostatic and induction forces has been discussed in terms of the main contribution factor in determining the physicochemical properties.