ABSTRACT

Good s buffer ionic liquids (GB-ILs) have demonstrated their potential usefulness in the biotechnological field due to their advantageous properties of self-buffering and biocompatibility. To further investigate the applicability of these solvents in industrial process, the knowledge of the thermophysical properties of such solvents is of utmost importance. In this work, a series of GB-ILs prepared by the combination of the Good s buffer anions MOPSO, BES, TAPSO, and CAPSO, with tetrabutylammonium, tetrabutylphosphonium, and cholinium cations were synthesized and characterized regarding the determination of the melting and decomposition temperatures. Additionally, the physical properties such as density, viscosity and refractive index were measured for these GB-ILs at atmospheric pressure and in the (288.15 to 353.15) K temperature range. Additional properties such as the isobaric thermal expansion coefficient and activation energy for viscous flow were also further derived from the temperature dependence of the measured properties. The effects of cation and anion species of GB-ILs on these thermophysical properties are discussed.

Compounds

#	Formula	Name
1	C23H50N2O5S	tetrabutylammonium 2-hydroxy-3-morpholinopropanesulfonate
2	C23H50NO5PS	tetrabutylphosphonium 2-hydroxy-3-morpholinopropanesulfonate
3	C12H28N2O6S	2-hydroxy-N,N,N-trimethylethanaminium 2-hydroxy-3-morpholinopropanesulfonate
4	C22H50N2O5S	tetrabutylammonium 2-(bis(2-hydroxyethyl)amino)ethanesulfonate
5	C22H50NO5PS	tetrabutylphosphonium 2-(bis(2-hydroxyethyl)amino)ethanesulfonate
6	C11H28N2O6S	2-hydroxy-N,N,N-trimethylethanaminium 2-(bis(2-hydroxyethyl)amino)ethanesulfonate
7	C23H52N2O7S	tetrabutylammonium 3-((1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)amino)-2-hydroxypropanesulfonate
8	C23H52NO7PS	tetrabutylphosphonium 3-((1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)amino)-2-hydroxypropanesulfonate
9	C12H30N2O8S	2-hydroxy-N,N,N-trimethylethanaminium 3-((1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)amino)-2-hydroxypropanesulfonate
10	C25H54N2O4S	tetrabutylammonium 3-(cyclohexylamino)-2-hydroxypropanesulfonate
11	C25H54NO4PS	tetrabutylphosphonium 3-(cyclohexylamino)-2-hydroxypropanesulfonate
12	C14H32N2O5S	2-hydroxy-N,N,N-trimethylethanaminium 3-(cyclohexylamino)-2-hydroxypropanesulfonate

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	Vibrating tube method	10
POMD	1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	10
POMD	1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	10
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	13
POMD	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	14
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	14
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	10
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	10
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	10
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	9
POMD	4	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	9
POMD	4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	14
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	14
POMD	5	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	14
POMD	5	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	14
POMD	6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	13
POMD	6	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	13
POMD	6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	12
POMD	7	Triple point temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	8	Triple point temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1
POMD	9	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	6
POMD	9	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	6
POMD	9	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	7
POMD	10	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	10
POMD	10	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	10
POMD	10	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	10
POMD	11	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	14
POMD	11	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Concentric cylinders viscometry	14
POMD	11	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	14
POMD	12	Triple point temperature, K ; Crystal			Crystal Liquid Air at 1 atmosphere	DSC	1

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

Densities, Viscosities, and Refractive Indexes of Good's Buffer Ionic Liquids

Lee, S. Y.[Sze Ying], Vicente, F. A.[Filipa A.], Coutinho, J. A. P.[Joao A. P.], Khoiroh, I.[Ianatul], Show, P. L.[Pau Loke], Ventura, S. P. M.[Sonia P. M.]

ABSTRACT