ABSTRACT

The densities, viscosities, and electrical conductivities of the binary systems of the ionic liquid (IL), N-(2-hydroxyethyl)piperazinium propionate ([(OH)2C2pi][C2CO2]), with three protic solvents (water, methanol, or ethanol) were measured in the IL concentration range from (0.05 to 3.00) mol*kg 1 at different temperatures T = (293.15 to 323.15) K and atmospheric pressure p = 0.1 MPa. The concentration dependences of apparent molar volume, viscosity, and electrical conductivity of the binary mixtures were correlated by the Pitzer equation, the Jones Dole equation, and the Casteel Amis equation, respectively. It is observed that both the density and viscosity increase with the elevated IL concentration or the decreased temperature. The electrical conductivity at a given IL concentration increases with the temperature, while the conductivity at a given temperature changes clearly against the IL concentration, and a maximum value can be observed. The measured results and the correlations present help for a better understanding and applications of the piperazinium-based IL.

Compounds

#	Formula	Name
1	C9H18N2O2	2-(piperazin-1-yl)ethyl propionate
2	CH4O	methanol
3	C2H6O	ethanol
4	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	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Falling or rolling sphere viscometry	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Falling or rolling sphere viscometry	1
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Vibrating tube method	1
POMD	4	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Falling or rolling sphere viscometry	1
POMD	4 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	154
POMD	4 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	154
POMD	4 1	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	147
POMD	2 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	154
POMD	2 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	154
POMD	2 1	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	147
POMD	3 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	154
POMD	3 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	154
POMD	3 1	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Alternating current cell with electrodes	147

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

Density, Viscosity, and Conductivity of Binary Mixtures of the Ionic Liquid N-(2-Hydroxyethyl)piperazinium Propionate with Water, Methanol, or Ethanol

Cao, Q.[Qi], Lu, X.[Xiaoxing], Wu, X.[Xi], Guo, Y.[Yongsheng], Xu, L.[Li], Fang, W.[Wenjun]

ABSTRACT