当前位置: X-MOL 学术J. Chem. Eng. Data › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Determination and Analysis of Solubility of 3-Bromo-2-Methylbenzoic Acid in Different Solvent Systems at Different Temperatures (T = 278.15–328.15 K)
Journal of Chemical & Engineering Data ( IF 2.6 ) Pub Date : 2020-02-26 , DOI: 10.1021/acs.jced.9b01007
Yuanyun Gu 1 , Wenge Yang 1 , Aixiang Hao 2 , Qiang Xu 1 , Yonghong Hu 3
Affiliation  

In the present study, the solubility properties of 3-bromo-2-methyl benzoic acid were studied by the gravimetric method under atmospheric pressure. In this experiment, we chose the following eight pure solvents and three binary solvent mixtures: Tetrahydrofuran, N,N-dimethylformamide, methanol, ethyl acetate, ethanol, acetonitrile, water, cyclohexane, (water + N,N-dimethylformamide), (ethyl acetate + Tetrahydrofuran), and (acetonitrile + N,N-dimethylformamide), respectively. The experimental temperature ranged from 278.15 to 328.15 K. The solubility data of 3-bromo-2-methyl benzoic acid in different pure solvents were fitted by the modified Apelblat model and the Buchowski–Ksiazaczak λh model. For the solubility data of 3-bromo-2-methyl benzoic acid in the three groups of binary solvent mixtures, two binary solvents- solvent-fitting models (combined nearly ideal binary solvent/Redlich–Kister (CNIBS/R–K) model and Jouyban–Acree model) and the modified Apelblat model- were used. By comparing the fitting results of each model, it could be seen that as long as the initial component was determined, the modified Apelblat model had a better correlation in both pure solvents and binary solvent mixtures. The experimental data showed that water, acetonitrile, or cyclohexane could be used as effective antisolvents of 3-bromo-2-methyl benzoic acid.

中文翻译:

不同温度下不同溶剂体系中3-溴-2-甲基苯甲酸的溶解度测定和分析(T = 278.15–328.15 K)

在本研究中,通过重量法在大气压下研究了3-溴-2-甲基苯甲酸的溶解性。在该实验中,我们选择了以下八种纯溶剂和三种二元溶剂混合物:四氢呋喃,NN-二甲基甲酰胺,甲醇,乙酸乙酯,乙醇,乙腈,水,环己烷,(水+ NN-二甲基甲酰胺),(乙基醋酸盐+四氢呋喃)和(乙腈+ NN-二甲基甲酰胺)。实验温度从278.15到不等的3-溴-2-甲基苯甲酸在不同纯溶剂拟合由修改Apelblat模型和Buchowski-Ksiazaczakλ328.15 K.溶解度数据ħ模型。对于3-溴-2-甲基苯甲酸在三组二元溶剂混合物中的溶解度数据,有两种二元溶剂-溶剂拟合模型(结合了近乎理想的二元溶剂/ Redlich–Kister(CNIBS / R–K)模型和使用了Jouyban-Acree模型和改良的Apelblat模型。通过比较每个模型的拟合结果,可以看出,只要确定了初始成分,改进的Apelblat模型在纯溶剂和二元溶剂混合物中都具有更好的相关性。实验数据表明,水,乙腈或环己烷可用作3-溴-2-甲基苯甲酸的有效抗溶剂。
更新日期:2020-02-26
down
wechat
bug