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

Solubility of 2,6-Diamino-3,5-dinitropyridine and 2,5-Dihydroxyterephthalic Acid in N,N-Dimethylformamide, Dimethylsulfoxide, Ethanol, and Methanol, N,N-Dimethylacetamide, and Acetic Acid

Wang, Y.-H.[Yan-Hong], Hu, Z.[Zhen], Long, J.[Jun], Meng, X.-L.[Xiang-Li], Song, Y.-J.[Yuan-Jun], Huang, Y. D.
J. Chem. Eng. Data 2010, 55, 1, 561-565
ABSTRACT
Solubility was reported for 2,6-diamino-3,5-dinitropyridine in N,N-dimethylformamide at (304.15 to 357.15) K, dimethylsulfoxide at (304.15 to 339.15) K, ethanol at (305.15 to 340.15) K, methanol at (293.15 to 339.15) K, and 2,5-dihydroxyterephthalic acid in N,N-dimethylformamide at (298.15 to 370.15) K, dimethylsulfoxide at (293.15 to 342.15) K, N,N-dimethylacetamide at (318.15 to 355.55) K, and acetic acid at (320.15 to 369.15) K. Results of these measurements are fitted with the combined binary solvent Margules equation. For the systems studied, the Margules equation is found to provide reasonable mathematical representation, with the average deviations between experimental values and calculated ones being on the order of +- 1.0 % and +- 0.2 % or less. Furthermore, the coupler parameters of the Margules equation (A21, A12) and the enthalpy of fusion (?fusH) were obtained by the Levenberg-Marquardt method and Global Optimization method.
Compounds
# Formula Name
1 C5H5N5O4 2,6-diamino-3,5-dinitropyridine
2 C2H6O ethanol
3 CH4O methanol
4 C3H7NO dimethylformamide
5 C2H6OS dimethyl sulfoxide
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
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 4
  • 1
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • Chromatography
  • 21
  • POMD
  • 5
  • 1
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • Chromatography
  • 14
  • POMD
  • 2
  • 1
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • Chromatography
  • 14
  • POMD
  • 3
  • 1
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • Chromatography
  • 18