Solubility of p-Aminobenzoic Acid Potassium in Organic Solvents and Binary (Water + Isopropyl Alcohol) Mixture at Temperatures from (283.15 to 318.15) K,Journal of Chemical & Engineering Data

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Solubility of p-Aminobenzoic Acid Potassium in Organic Solvents and Binary (Water + Isopropyl Alcohol) Mixture at Temperatures from (283.15 to 318.15) K
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-06-08 , DOI: 10.1021/acs.jced.7b00978
Min Su ₁ , Qing Lu ₁ , Hua Sun _{2,

3} , Jingkang Wang ₃

Affiliation

The solid–liquid equilibrium behavior of p-aminobenzoic acid potassium (KPAB) in pure organic solvents and binary (water + isopropyl alcohol) solvents were determined over the temperature range (283.15–318.15) K using a laser dynamic method. It was found that KPAB is easily dissolved in water, polyhydroxy alcohols and amides; slightly soluble in ethyl acetate, isopropyl alcohol, and n-propanol. The solubility of KPAB in both the mono- and binary mixed solvents increases with the increasing temperature, whereas it decreases with the rise of mole fraction of isopropyl alcohol in binary (water + isopropyl alcohol) mixed solvents. The solubility in pure solvents was correlated by the modified Apelblat equation, and the solubility in binary mixed solvents was correlated with the modified Apelblat equation and Combined Nearly Ideal Binary Solvent/Redlich–Kister (CNIBS/R-K) model. All the models give satisfactory correlation results with an average relative deviation (ARD) less than 2.5%, which provide basic data for the design of KPAB crystallization process and equipment.

中文翻译：

溶解度p有机溶剂，从（283.15至318.15）温度二进制（水+异丙醇）混合氨基苯甲酸钾K

p的固液平衡行为使用激光动力学方法在温度范围（283.15–318.15）K下测定纯有机溶剂和二元（水+异丙醇）溶剂中的-氨基苯甲酸钾（KPAB）。已经发现，KPAB很容易溶于水，多羟基醇和酰胺中。微溶于乙酸乙酯，异丙醇和正丙醇。KPAB在单和二元混合溶剂中的溶解度均随着温度的升高而增加，而随着异丙醇在二元（水+异丙醇）混合溶剂中摩尔分数的增加而降低。在纯溶剂中的溶解度通过修正的Apelblat方程关联，在二元混合溶剂中的溶解度与修正的Apelblat方程和近似理想二元溶剂/ Redlich-Kister组合模型（CNIBS / RK）关联。

更新日期：2018-06-09

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