Solubility Determination and Model Correlation of Benorilate between T = 278.18 and 318.15 K,Journal of Chemical & Engineering Data

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Solubility Determination and Model Correlation of Benorilate between T = 278.18 and 318.15 K
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-06-28 , DOI: 10.1021/acs.jced.0c00301
Yüfang Wu ₁ , Maolin Ren ₁ , Xiaolu Zhang ₁

Affiliation

The objective is to study the solubility of benorilate in 12 pure solvents in the temperature range from 278.15 to 318.15 K by the isothermal saturation method at atmospheric pressure. The solubility increased monotonically with the rising temperature. Moreover, at all evaluated temperatures, the largest solubility value was obtained in N-methyl-2-pyrrolidone, followed by N,N-dimethylformamide > 2-butanone > 1,4-dioxane > acetonitrile > ethyl acetate > 1-butanol > ethanol > methanol > n-propanol > isopropanol > toluene. The solubility values in the reaction solvent (toluene) varied from 1.3 × 10^–5 to 1.08 × 10^–4 in mole fraction between T = 278.15 and 318.15 K, an increase of 8.31-fold. At all evaluated temperatures, the values in ethanol increased from 1.58 × 10^–4 to 9.07 × 10^–4 in mole fraction, an increase of 5.74-fold. Hence, the precipitation and the crystallization purification of benorilate could be effectively controlled by changing the temperature. The obtained solubility data were correlated with the modified Apelblat equation and λh equation. The results of relative average deviations indicated that both the λh equation and the modified Apelblat equation are capable of describing the solubility of benorilate in selected pure solvents.

中文翻译：

T = 278.18和318.15 K之间的苯甲酸酯溶解度测定和模型相关性

目的是通过大气压下的等温饱和法研究苯甲酸酯在12种纯溶剂中的溶解度，温度范围为278.15至318.15K。溶解度随着温度的升高而单调增加。此外，在所有评价的温度下，在获得最大溶解度值ñ -甲基-2-吡咯烷酮，然后Ñ，ñ -二甲基甲酰胺> 2-丁酮> 1,4-二恶烷>乙腈>乙酸乙酯> 1-丁醇>乙醇>甲醇>正丙醇>异丙醇>甲苯。在反应溶剂（甲苯）中的溶解度值在T与T之间的摩尔分数从1.3×10 ^–5到1.08×10 ^–4不等= 278.15和318.15 K，增加了8.31倍。在所有评估温度下，乙醇中的摩尔分数从1.58×10 ^–4增加到9.07×10 ^–4，增加了5.74倍。因此，可以通过改变温度来有效地控制苯甲酸酯的沉淀和结晶纯化。将所获得的溶解度数据，用经修饰的Apelblat方程和λ相关ħ方程。相对平均偏差的结果表明，λ两者ħ方程和改性Apelblat方程是能够描述在选择的纯溶剂贝诺酯的溶解度。

更新日期：2020-07-09

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