Equilibrium solubility, solvent effect, solvation and thermodynamic modeling of 1, 3-dinitropyrazole in solutions of methyl alcohol /ethyl alcohol + water

IF 3.3 3区生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

Biophysical chemistry Pub Date : 2025-03-10 DOI:10.1016/j.bpc.2025.107430

Adel Noubigh , Manef Abderrabba

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Abstract

1,3-dinitropyrazole's (DNP) solubility was studied by utilizing the gravimetric method across temperatures ranging 278.15 to 318.15 K and a pressure of 101.2 kPa. In the study, two solvent mixtures were investigated: aqueous methyl alcohol and aqueous ethyl alcohol. Based on the findings, higher temperatures favorably influenced solute dissolution in both solvent systems. To relate the solubility of DNP in two binary solvents mixture, the KAT-LSER model was used. This implies that the polarity of the solvents, as well as the cavity term and hydrogen bonding interactions were pivotal to DNP's solubility. By utilizing the Jouyban-Acree, van't Hoff-Jouyban-Acree, Apelblat-Jouyban-Acree and Ma models, the derived results were compiled. The experimental results prove that the Apelblat-Jouyban-Acree model could give the best correlation results with the experimental data, with the overall relative average deviation values (RAD) of 2.05 %, 2.51 % and the root mean-square deviation (RMSD) of 0.415 × 10⁻⁴, 0.492 × 10⁻⁴ in aqueous methyl alcohol and aqueous ethyl alcohol, respectively. Using the inverse Kirkwood–Buff integrals method, the preferential solvation parameters for the solute DNP determined. The obtained results show that DNP exhibited a preference for solvation in methyl alcohol and ethyl alcohol at all mole fractions of alcohol.

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来源期刊

Biophysical chemistry 生物-生化与分子生物学

CiteScore

6.10

自引率

10.50%

发文量

121

审稿时长

20 days

期刊介绍： Biophysical Chemistry publishes original work and reviews in the areas of chemistry and physics directly impacting biological phenomena. Quantitative analysis of the properties of biological macromolecules, biologically active molecules, macromolecular assemblies and cell components in terms of kinetics, thermodynamics, spatio-temporal organization, NMR and X-ray structural biology, as well as single-molecule detection represent a major focus of the journal. Theoretical and computational treatments of biomacromolecular systems, macromolecular interactions, regulatory control and systems biology are also of interest to the journal.