ABSTRACT

Densities and viscosities of two pyridinium-based ionic liquids, 1-butylpyridinium tetrafluoroborate [BuPy][BF4] and 1-octylpyridinium tetrafluoroborate [OcPy][BF4], and their binaries with water at atmospheric pressure and temperatures from (283.15 to 348.15) K were determined. The densities and viscosities of pure ionic liquids were correlated successfully by empirical equations. The Vogel Fulcher Tammann equations can fit the experimental viscosities for pure and binary of both IL systems. Excess molar volume and viscosity deviation were calculated for the binaries. The excess molar volumes have positive deviation from ideal solution while the viscosity deviations have negative values.

Compounds

#	Formula	Name
1	C9H14BF4N	1-butylpyridinium tetrafluoroborate
2	C13H22BF4N	1-octylpyridinium tetrafluoroborate
3	H2O	water

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	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	15
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	15
POMD	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	15
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	15
POMD	3 1	Viscosity, Pa*s ; Liquid	Mole fraction - 3; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	119
POMD	3 1	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	119
POMD	3 2	Viscosity, Pa*s ; Liquid	Mole fraction - 3; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	127
POMD	3 2	Mass density, kg/m3 ; Liquid	Mole fraction - 3; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	127

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Density and viscosity of pyridinium-based ionic liquids and their binary mixtures with water at several temperatures

Mokhtarani, B.[Babak], Sharifi, A.[Ali], Mortaheb, H. R.[Hamid Reza], Mirzaei, M.[Mojtaba], Mafi, M.[Morteza], Sadeghian, F.[Fatemeh]

ABSTRACT