Solubilities of stearic acid in organic solvents and in azeotropic solvent mixtures

被引：41

作者：

Calvo, Beatriz ^{[1
]}

Cepeda, Emilio A. ^{[1
]}

机构：

[1] Univ Basque Country, Fac Farm, Dept Ingn Quim, Vitoria 01006, Spain

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2008年 / 53卷 / 03期

关键词：

D O I：

10.1021/je7006567

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The solubility of stearic acid was measured in ethanol, 2-propanol, heptane, hexane, acetone, and trichloroethylene and in the azeotropic mixtures of the solvents (ethanol-heptane; hexane-ethanol; ethanol-trichloroethylene; acetone-heptane; heptane-2-propanol; acetone-hexane; hexane-2-propanol; 2-propanol-trichloroethylene), by the phase disappearance method, from (290 to 325) K. The stearic acid-pure solvent experimental data were correlated with the Van Laar, Wilson, NRTL, and UNIQUAC equations and the solubility of stearic acid in azeotropic mixtures with the NIBS/Redlich-Kister equation. The UNIFAC solubility prediction improved when the correction for the existence of stearic acid dimers was applied except for systems with trichloroethylene and 2-propanol. The solubility of stearic acid increased in azeotropic mixtures regarding pure solvents except for the heptane-acetone and hexane-acetone mixtures.

引用

页码：628 / 633

页数：6

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