Abstract
The solubility of 3,4-bis(3-nitrofurazan-4-yl)furoxan (DNTF) in different solvents is essential for crystallization and further theoretical studies. In this study, the solubility and supersolubility as well as metastable zone width of 3,4-bis(3-nitrofurazan-4-yl)furoxan (DNTF) in (acetic acid + water) systems were determined in the temperature ranging from 298.15 to 338.15 K by the dynamic laser monitoring method under atmospheric pressure. Solubility data was correlated by the modified Apelblat equation, binary solvent (CNIBS)/Redlich–Kister model, Wilson model, and the nonrandom two-liquid (NRTL) model, and the percentage relative deviation ∑(%RD) values were 1.698, 3.001, 3.253 and 1.379, respectively. The correlation results showed that calculated values by the four models agree well with the experimental data. The experiment results indicated that the solubility of 3,4-bis(3-nitrofurazan-4-yl)furoxan in the mixtures depending on temperature, cosolute concentration, and pH value that increased with increasing temperature and acetic acid content. However, the metastable zone width decreased with increasing temperature and decreased with increasing of acetic acid content. Therefore, the experimental data and model parameters would provide essential support for industrial design.
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