Solubility Determination and Correlation for Pyridoxal 5-Phosphate Monohydrate in Different Binary Solvents from 278.15 K to 318.15 K

被引：12
作者：
Sun, Hua [1 ]
Zhang, Xiaowu [1 ]
Liu, Baoshu [1 ]
Liu, Dong [2 ]
机构：
[1] Hebei Univ Sci & Technol, Coll Chem & Pharmaceut Engn, Shijiazhuang 050018, Hebei, Peoples R China
[2] Hebei MeiBang Engn & Technol Co Ltd, 98 Huanghe Rd, Shijiazhuang 050000, Hebei, Peoples R China
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2018年 / 63卷 / 08期
关键词：
MAGNESIUM-DL-ASPARTATE; P-TOLUIC ACID; MIXING PROPERTIES; THERMODYNAMIC ANALYSIS; ORGANIC-SOLVENTS; MIXED-SOLVENTS; NRTL EQUATION; WATER; MIXTURES; EQUILIBRIUM;
D O I：
10.1021/acs.jced.8b00309
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The solubility of pyridoxal 5-phosphate monohydrate (PLP) in four binary mixed solvents (methanol + water, ethanol + water, isopropanol + water, and acetone + water) with various compositions were determined at the temperature from 278.15K to 318.15K by the isothermal dissolution equilibrium method under normal atmospheric pressure. The solubility of PLP increased with the increasing temperature and mole fraction of water for the binary mixed solvents ethanol + water, isopropanol + water, and acetone + water. For methanol + water, the mole fraction solubility increased with the temperature at a certain solvent composition, yet the solubility had a maximum value around the mole fraction of water f(c) = 0.8 when the temperature was higher than 308.15 K. The experimental solubility was correlated with the Wilson model, NRTL model, Apelblat equation, and lambda h equation, and the largest value of RMSD was 16.6649 x 10(-5). The Apelblat equation could best describe the solubility behavior according to the result of AIC analysis. Delta G(mix), Delta H-mix, and Delta S-mix, in the mixed solutions were calculated. The dissolution process of PLP in the mixed solvents was spontaneous.
引用
收藏
页码：3035 / 3046
页数：12
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