ABSTRACT

The present study is focused on synthesis and physicochemical properties of a new class of Deep Eutectic Solvents (DESs) based on Benzyltripropylammonium chloride as hydrogen bond acceptor (HBA) and different hydrogen bond donors (HBD) like phenol, ethylene glycol, glycerol and lactic acid. Several physicochemical properties such as, density, speed of sound, conductivity and refractive index of these four DESs have been measured in the temperature range of 293.15 to 343.15 K and used to calculate various derived thermodynamic properties. Further, rheological measurements have been carried out to understand the viscosity and flow behavior of these DESs and also the influence of different hydrogen bonding environment on the nature of DESs. The temperature dependent density and viscosity values have been fitted using second order polynomial and well-known Vogel-Tammann-Fulcher (VTF) equations, respectively The experimental results implies that both the type of HBD and temperature has significant influence on the physicochemical characteristics of the synthesized DES.

Compounds

#	Formula	Name
1	C16H28ClN	benzyltripropylammonium chloride
2	C6H6O	phenol
3	C2H6O2	1,2-ethanediol
4	C3H6O3	2-hydroxypropanoic acid
5	C3H8O3	glycerol

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 1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 2; Liquid	Liquid	Standard Abbe refractometry	11
POMD	2 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 2; Liquid	Liquid	Vibrating tube method	11
POMD	2 1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 2; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	11
POMD	2 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 2; Liquid	Liquid	Falling or rolling sphere viscometry	11
POMD	2 1	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 2; Liquid	Liquid	Alternating current cell with electrodes	11
POMD	3 1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 3; Liquid	Liquid	Standard Abbe refractometry	11
POMD	3 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 3; Liquid	Liquid	Vibrating tube method	11
POMD	3 1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 3; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	11
POMD	3 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 3; Liquid	Liquid	Falling or rolling sphere viscometry	11
POMD	3 1	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 3; Liquid	Liquid	Alternating current cell with electrodes	11
POMD	4 1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 4; Liquid	Liquid	Standard Abbe refractometry	11
POMD	4 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 4; Liquid	Liquid	Vibrating tube method	11
POMD	4 1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 4; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	11
POMD	4 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 4; Liquid	Liquid	Falling or rolling sphere viscometry	9
POMD	4 1	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 4; Liquid	Liquid	Alternating current cell with electrodes	11
POMD	5 1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 5; Liquid	Liquid	Standard Abbe refractometry	11
POMD	5 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 5; Liquid	Liquid	Vibrating tube method	11
POMD	5 1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 5; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	11
POMD	5 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 5; Liquid	Liquid	Falling or rolling sphere viscometry	9
POMD	5 1	Electrical conductivity, S/m ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Amount ratio of solute to solvent - 5; Liquid	Liquid	Alternating current cell with electrodes	11

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Acoustic, volumetric, transport, optical and rheological properties of benzyltripropylammonium based Deep Eutectic Solvents

Basaiahgari, Anusha, Panda, Somenath, Gardas, Ramesh L.

ABSTRACT