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

Effect of Hydrotropes on the Solubility and Mass Transfer Coefficient of Benzyl Benzoate in Water

Meyyappan, N., Ghandhi, N. N.
J. Chem. Eng. Data 2005, 50, 3, 796-800
ABSTRACT
This work presents a comprehensive study on the effect of hydrotropes on the solubility and mass transfer coefficient of benzyl benzoate in water. The solubility studies were performed using hydrotropes such as tri-sodium citrate, urea, sodium benzoate, and sodium salicylate for various concentrations in the range from (0 to 3.0) molaL-1 and system temperatures ranging from T ) (303 to 333) K. The performance of the hydrotropes was measured in terms of the Setschenow constant (KS). It was found that the solubility of benzyl benzoate increases with an increase in hydrotrope concentration and also with system temperature. A minimum hydrotrope concentration (MHC) in the aqueous phase was required to initiate significant solubilization of benzyl benzoate. Consequent to the increase in solubilization of benzyl benzoate, the mass transfer coefficient was also found to increase with an increase in hydrotrope concentration. All hydrotropes used in this work showed an enhancement in the solubility and mass transfer coefficient to different degrees. The maximum enhancement factor, which is the ratio between the presence and absence of a hydrotrope, has been determined for both cases. However, a threshold value of the MHC was found essential to initiate significant increase in hydrotrope concentration.
Compounds
# Formula Name
1 C14H12O2 benzyl benzoate
2 H2O water
3 CH4N2O urea
4 C7H5NaO3 sodium salicylate
5 C7H5NaO2 sodium benzoate
6 C6H5Na3O7 trisodium citrate
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
  • 2
  • Amount concentration (molarity), mol/dm3 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • titration of ester layer
  • 4
  • POMD
  • 6
  • 1
  • 2
  • Amount concentration (molarity), mol/dm3 - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Amount concentration (molarity), mol/dm3 - 6; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • titration of ester layer
  • 80
  • POMD
  • 3
  • 1
  • 2
  • Amount concentration (molarity), mol/dm3 - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Amount concentration (molarity), mol/dm3 - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • titration of ester layer
  • 80
  • POMD
  • 4
  • 1
  • 2
  • Amount concentration (molarity), mol/dm3 - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Amount concentration (molarity), mol/dm3 - 4; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • titration of ester layer
  • 80
  • POMD
  • 1
  • 5
  • 2
  • Amount concentration (molarity), mol/dm3 - 1 ; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Amount concentration (molarity), mol/dm3 - 5; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • titration of ester layer
  • 80