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

Solubility and Activity Coefficients of Acidic and Basic Nonelectrolytes in Aqueous Salt Solutions. 1. Solubility and Activity Coefficients of o-Phthalic Acid and L-Cystine in NaCl(aq), (CH3)4NCl(aq), and (C2H5)4NI(aq) at Different Ionic Strengths and at t ) 25 deg C

Bretti, C.[Clemente], Crea, F.[Francesco], Foti, C.[Claudia], Sammartano, S.
J. Chem. Eng. Data 2005, 50, 5, 1761-1767
ABSTRACT
The solubility of o-phthalic acid and L-cystine was determined at following concentrations: NaCl(aq) (0.1 to 4.5) molaL-1, (CH3)4NCl(aq) (0.1 to 3) molaL-1, (C2H5)4NI(aq) (0.1 to 1) molaL-1 and in pure water. The solubility trend is (C2H5)4NI > (CH3)4NCl > NaCl for o-phthalic acid and NaCl > (CH3)4NCl > (C2H5)4- NI for L-cystine. Setschenow constants and activity coefficients of neutral species were calculated from these data. The different trends shown by o-phthalic acid and L-cystine are discussed.
Compounds
# Formula Name
1 C8H6O4 1,2-benzenedicarboxylic acid
2 C6H12N2O4S2 3,3'-dithiobis-L-alanine
3 ClNa sodium chloride
4 C4H12ClN tetramethylammonium chloride
5 C8H20IN tetraethylammonium iodide
6 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
  • 1
  • 6
  • Molality, mol/kg ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • titration
  • 6
  • POMD
  • 2
  • 6
  • Molality, mol/kg ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 2
  • titration
  • 2
  • POMD
  • 5
  • 1
  • 6
  • Molality, mol/kg - 1 ; Liquid mixture 1
  • Solvent: Molality, mol/kg - 5; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Crystal - 1
  • titration
  • 13
  • POMD
  • 4
  • 1
  • 6
  • Molality, mol/kg - 1 ; Liquid mixture 1
  • Solvent: Molality, mol/kg - 4; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Crystal - 1
  • titration
  • 11
  • POMD
  • 1
  • 3
  • 6
  • Molality, mol/kg - 1 ; Liquid mixture 1
  • Solvent: Molality, mol/kg - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Crystal - 1
  • titration
  • 13
  • POMD
  • 2
  • 5
  • 6
  • Molality, mol/kg - 2 ; Liquid mixture 1
  • Solvent: Molality, mol/kg - 5; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Crystal - 2
  • titration
  • 8
  • POMD
  • 2
  • 4
  • 6
  • Molality, mol/kg - 2 ; Liquid mixture 1
  • Solvent: Molality, mol/kg - 4; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Crystal - 2
  • titration
  • 8
  • POMD
  • 2
  • 3
  • 6
  • Molality, mol/kg - 2 ; Liquid mixture 1
  • Solvent: Molality, mol/kg - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Temperature, K; Liquid mixture 1
  • Liquid mixture 1
  • Crystal - 2
  • titration
  • 11