Thermodynamics Research Center / ThermoML | Thermochimica Acta

Thermodynamics and solubilization behavior of (2Z)-N-cyclohexyl-2-(3-hydroxybenzylidine) hydrazine carbothioamide in polyethylene glycol-400 + water mixtures at (298.15 to 338.15) K

Shakeel, F.[Faiyaz], Bhat, M. A.[Mashooq A.], Haq, N.[Nazrul]
Thermochim. Acta 2015, 599, 52-56
ABSTRACT
Dissolution thermodynamics of (2Z)-N-cyclohexyl-2-(3-hydroxybenzylidine) hydrazine carbothioamide (CHBH) in various polyethylene glycol-400 (PEG-400) + water mixtures from (298.15 to 338.15) K were studied and correlated. The experimental solubilities were correlated with the modified Apelblat and Yalkowsky models. The root mean square deviations (RMSD) were observed as (0.88 4.28)% for the modified Apelblat model and (2.10 8.25)% for Yalkowsky model. The mole fraction solubility (7.12 10 2 at 298.15 K) and mass fraction solubility (5.32 10 2 kg kg 1 at 298.15 K) of CHBH were observed highest in pure PEG-400. However, the lowest mole fraction (3.83 10 7 at 298.15 K) and mass fraction solubility (5.90 10 6 kg kg 1 at 298.15 K) of CHBH were observed in pure water. Thermodynamic studies showed endothermic and spontaneous dissolution of CHBH in all co-solvent mixtures.
Compounds
# Formula Name
1 C14H19N3OS (Z)-N-cyclohexyl-2-(3-hydroxybenzylidene)hydrazine-1-carbothioamide
2 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
  • 2
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Crystal - 1
  • UV-vis spectrophotometry
  • 5