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Journal of Chinese Pharmaceutical Sciences ›› 2024, Vol. 33 ›› Issue (10): 906-917.DOI: 10.5246/jcps.2024.10.065

• Original articles • Previous Articles     Next Articles

Solvation dynamics of furazolidone in pure organic solvents and aqueous EDTA disodium salt mixtures: molecular interactions and thermodynamic insights

Yufang Wu*(), Qingzhi Guo, Rui Li, Shikun Zhang   

  1. Department of Biological Sciences, XinZhou Teachers University, Xinzhou, 034000, Shanxi, China
  • Received:2024-02-24 Revised:2024-04-21 Accepted:2024-05-11 Online:2024-10-31 Published:2024-10-31
  • Contact: Yufang Wu
  • Supported by:
    Innovation and Entrepreneurship Training Program for College Students in Shanxi Province (Grant No. 2021100).

Abstract:

This study systematically examined the dissolution behavior of furazolidone in 12 different pure solvents and in aqueous solutions containing ethylenediaminetetraacetic acid disodium salt (EDTA-2Na). The solubility data indicated that polar aprotic solvents demonstrated a marginally higher solubility of furazolidone compared to alcohols and water. Interestingly, a co-solvency effect was observed in the aqueous solutions of EDTA-2Na, where the solubility of furazolidone initially increased and then decreased with the gradual addition of EDTA-2Na, peaking at a mass fraction of 0.03 (1.949 × 10–5 at 323.15 K). The analysis using the Kamlet-Abboud-Taft Linear Solvation Energy Relationship (KAT-LSER) model suggested that the dissolution of furazolidone in these systems was predominantly influenced by non-specific solute-solvent and solvent-solvent interactions. Furthermore, Hansen solubility parameter calculations revealed that N,N-dimethylformamide (DMF) and N,N-dimethylacetamide (DMAC) exhibited superior dissolution capabilities compared to other solvents. It was also found that the partial solubility parameters played a crucial role in determining the overall solubility behavior.

Key words: Furazolidone, Solubility, Co-solvency phenomenon, Correlation of thermodynamic models

Supporting: /attached/file/20241104/20241104005827_401.pdf