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- Title
Thermodynamic Properties of 1,5-Pentanediamine Adipate Dihydrate in Three Binary Solvent Systems from 278.15 K to 313.15 K.
- Authors
Li, Liang; Zhao, Yihan; Hou, Baohong; Feng, Han; Wang, Na; Liu, Dong; Ma, Yingjie; Wang, Ting; Hao, Hongxun
- Abstract
In this work, solubility data of 1,5-pentanediamine adipate dihydrate in binary solvent systems of water + methanol, water + ethanol and water + N,N-dimethylformamide were experimentally measured via a static gravimetric method in the temperature range from 278.15 K to 313.15 K under atmospheric pressure. The results indicated that the solubility of 1,5-pentanediamine adipate dihydrate increased with the rising of temperature in all the selected binary solvent systems. For water + N,N-dimethylformamide, solubility increased as the mole fraction of water increased. However, the rising tendency changed when the temperature was higher than 303.15 K for water + methanol, and it would show a cosolvency phenomenon for water + ethanol. Furthermore, the solubility data were fitted with modified an Apelblat equation, NRTL model, combined nearly ideal binary solvent/Redlich Kister (CNIBS/R-K) model and Jouban–Acree model. The calculation results agreed well with the experimental data. Finally, the mixing thermodynamic properties of 1,5-pentanediamine adipate dihydrate in all tested solvents were calculated based on the experimental data and NRTL model.
- Subjects
SOLVENTS; MOLE fraction; ATMOSPHERIC pressure; SOLUBILITY; ETHANOL; DIMETHYLFORMAMIDE
- Publication
Crystals (2073-4352), 2022, Vol 12, Issue 6, p877
- ISSN
2073-4352
- Publication type
Article
- DOI
10.3390/cryst12060877