ABSTRACT

Density, speed of sound, refractive index, and dynamic viscosity of the ionic liquids (ILs) 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide, BMpyr NTf2, and trihexyl(tetradecyl) phosphonium dicyanamide, P66614 dca, were studied as a function of temperature at atmospheric pressure. Thermal expansion coefficient, ap, molecular volumes, and standard entropies of these ILs were calculated from the experimental density values. The solubility of three aromatic components (benzene, toluene, and ethylbenzene) in the selected ILs was carried out at T = 298.15 K and atmospheric pressure and compared with literature values for sulfolane.

Compounds

#	Formula	Name
1	C6H6	benzene
2	C7H8	toluene
3	C8H10	ethylbenzene
4	C11H20F6N2O4S2	1-butyl-1-methylpyrrolidinium bis[(trifluoromethyl)sulfonyl]imide
5	C34H68N3P	tetradecyl(trihexyl)phosphonium dicyanamide

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	4	Normal melting temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	VISOBS	1
POMD	4	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	11
POMD	4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	13
POMD	4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Single path-length method	14
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	14
POMD	4	Isobaric coefficient of expansion, 1/K ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Curve Fitting Density Data	1
POMD	5	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	11
POMD	5	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	13
POMD	5	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Single path-length method	14
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	14
POMD	5	Isobaric coefficient of expansion, 1/K ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Curve Fitting Density Data	1
POMD	1 4	Mole fraction - 4 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Density calibration data	1
POMD	2 4	Mole fraction - 4 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Density calibration data	1
POMD	3 4	Mole fraction - 4 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Density calibration data	1

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Effect of temperature on the physical properties of two ionic liquids

Pereiro, A. B.[Ana B.], Veiga, H. I. M.[Helena I.M.], Esperanca, J. M. S. S.[Jose M. S. S.], Rodriguez, A.[Ana]

ABSTRACT