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

Measurement and Correlation for the Solid Solubility of Antioxidants of EDTA Disodium Salt Dihydrate, EDTA Calcium Disodium Salt Hydrate, and l-Cysteine Hydrochloride in Supercritical Carbon Dioxide

Wang, T.-C.[Tzu-Chi], Wu, Y.-T.[Yueh-Ta]
J. Chem. Eng. Data 2016, 61, 1, 342-347
ABSTRACT
This research focuses on measuring the solubility of three antioxidants ethylenediaminetetraacetic acid disodium salt hydrate, ethylenediaminetetraacetic acid calcium disodium salt hydrate, and l-cysteine hydrochloride in supercritical carbon dioxide. Using a semiflow apparatus, the experiment takes data at 308.15, 313.15, and 318.15 K with pressure ranging from 10 to 22 MPa (for ethylenediaminetetraacetic acid disodium salt dihydrate) or from 12 to 24 MPa (for ethylenediaminetetraacetic acid calcium disodium salt hydrate and l-cysteine hydrochloride). Two semiempirical equations one proposed by Chrastil, the other Mendez-Santiago and Teja are applied to find the correlated relationship of the experimental data. With the choice of fitted parameters, the correlation derived from the two equations are satisfactory: the average absolute relative deviation is under 5.1%.
Compounds
# Formula Name
1 C10H18N2Na2O10 disodium N,N'-1,2-ethanediylbis(N-(carboxymethyl)glycinate) dihydrate
2 C10H14CaN2Na2O9 calcium disodium 2,2',2'',2'''-(ethane-1,2-diylbis(azanetriyl))tetraacetate monohydrate
3 C3H8ClNO2S (R)-cysteine hydrochloride
4 CO2 carbon dioxide
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
  • 4
  • 1
  • Mole fraction - 1 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 1
  • UV spectroscopy
  • 21
  • POMD
  • 4
  • 2
  • Mole fraction - 2 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 2
  • UV spectroscopy
  • 21
  • POMD
  • 3
  • 4
  • Mole fraction - 3 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Crystal - 3
  • UV spectroscopy
  • 21