ABSTRACT

Thermophysical properties viz. surface tension, viscosity, density, and ultrasonic velocity of three ionic liquids 1-butyl-3-methyl imadazolium octyl sulfate [BMIM][OcSO4], 1-butyl-3-methyl imadazolium hexafluorophosphate [BMIM][PF6], and 1-ethyl-3-methyl imadazolium methanesulfonate [EMIM][MeSO3] have been measured in a wide temperature range. Experimental data so obtained have been used to calculate isentropic compressibility, isothermal expansion coefficient, surface entropy, surface enthalpy, and critical temperature (temperature where the distinction between liquid and gas phase vanishes and the surface tension tends to zero). Structure property correlation for different ILs is also discussed.

Compounds

#	Formula	Name
1	C16H32N2O4S	1-butyl-3-methylimidazolium octyl sulfate
2	C8H15F6N2P	1-butyl-3-methylimidazolium hexafluorophosphate
3	C7H14N2O3S	1-ethyl-3-methylimidazolium methanesulfonate

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	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	PYCNOM:UFactor:16	7
POMD	1	Surface tension liquid-gas, N/m ; Liquid	Temperature, K; Liquid		Liquid Air at 1 atmosphere	DROPSH:UFactor:8	6
POMD	1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	LVPAI:UFactor:8	7
POMD	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	7
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	PYCNOM:UFactor:12	7
POMD	2	Surface tension liquid-gas, N/m ; Liquid	Temperature, K; Liquid		Liquid Air at 1 atmosphere	DROPSH:UFactor:8	7
POMD	2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	LVPAI:UFactor:8	7
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	7
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	PYCNOM:UFactor:16	7
POMD	3	Surface tension liquid-gas, N/m ; Liquid	Temperature, K; Liquid		Liquid Air at 1 atmosphere	DROPSH:UFactor:8	7
POMD	3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	LVPAI:UFactor:8	7

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

Viscoelastic, Surface, and Volumetric Properties of Ionic Liquids [BMIM][OcSO4], [BMIM][PF6] and [EMIM][MeSO3]

Singh, M.[Manish], Mandal, S.[Satish], Verma, Y.[Yogendra], Gupta, A.[Abhishek], Singh, R.[Rajendra], Chandra, S.[Suresh]

ABSTRACT