ABSTRACT

We present here a comprehensive thermophysical study of the piridynium-based ionic liquid: 1- ethylpyridinium triflate. Density, speed of sound, refractive index, surface tension, isobaric molar heat capacity, kinematic viscosity and electrical conductivity have been determined in the temperature range (293.15 338.15 K) and at pressure of 0.1 MPa, density was also measured in the pressure range (0.1 40 MPa) at T = 303.15 K. From these values, some derived properties have been calculated. In addition the thermal behaviour around the melting point has been registered. All these properties have been discussed and compared with those of two similar ionic liquids, 1-ethylpyridinium bis(trifluoromethylsulfo nyl)imide and 1-butylpyridinium triflate.

Compounds

#	Formula	Name
1	C8H10F3NO3S	1-ethylpyridinium triflate

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	Normal melting temperature, K ; Crystal 1			Crystal 1 Liquid Air at 1 atmosphere	DTA	1
POMD	1	Molar enthalpy of transition or fusion, kJ/mol ; Crystal 1			Crystal 1 Liquid Air at 1 atmosphere	DSC	1
POMD	1	Triple point temperature, K ; Crystal 2			Crystal 2 Crystal 1 Air at 1 atmosphere	DSC	1
POMD	1	Molar enthalpy of transition or fusion, kJ/mol ; Crystal 2			Crystal 2 Crystal 1 Air at 1 atmosphere	DSC	1
POMD	1	Mass density, kg/m3 ; Metastable liquid	Temperature, K; Metastable liquid	Pressure, kPa; Metastable liquid	Metastable liquid	Vibrating tube method	19
POMD	1	Refractive index (Na D-line) ; Metastable liquid	Temperature, K; Metastable liquid	Pressure, kPa; Metastable liquid	Metastable liquid	Standard Abbe refractometry	19
POMD	1	Surface tension liquid-gas, N/m ; Metastable liquid	Temperature, K; Metastable liquid		Metastable liquid Air at 1 atmosphere	Drop volume	19
POMD	1	Molar heat capacity at constant pressure, J/K/mol ; Metastable liquid	Temperature, K; Metastable liquid	Pressure, kPa; Metastable liquid	Metastable liquid	Small sample (50 mg) DSC	19
POMD	1	Kinematic viscosity, m2/s ; Metastable liquid	Temperature, K; Metastable liquid	Pressure, kPa; Metastable liquid	Metastable liquid	Capillary tube (Ostwald; Ubbelohde) method	19
POMD	1	Mass density, kg/m3 ; Liquid	Pressure, kPa; Liquid	Temperature, K; Liquid	Liquid	Vibrating tube method	9
POMD	1	Speed of sound, m/s ; Metastable liquid	Temperature, K; Metastable liquid	Pressure, kPa; Metastable liquid Frequency, MHz; Metastable liquid	Metastable liquid	Sing-around technique in a fixed-path interferometer	19
POMD	1	Electrical conductivity, S/m ; Metastable liquid	Temperature, K; Metastable liquid	Pressure, kPa; Metastable liquid Frequency, MHz; Metastable liquid	Metastable liquid	Alternating current cell with electrodes	19

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermophysical characterization of 1-ethylpyridinium triflate and comparison with similar ionic liquids

Garcia-Andreu, M.[Maria], Castro, M.[Miguel], Gascon, I.[Ignacio], Lafuente, C.[Carlos]

ABSTRACT