饱和O -氯苯甲酸溶液在298.15 K下的溶解度、解离、缔合和溶剂化参数

Food and Public Health Pub Date : 2012-05-09 DOI:10.5923/J.FPH.20120203.01

E. Gomaa

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引用次数: 2

摘要

测定了O -氯苯甲酸饱和溶液在298.15 K时在各种溶剂中的溶解度。所用溶剂为:水(W)、乙醇(Et)、二甲基亚砜(DMSO)、乙腈(AN)、甲醇(Me)、1-4、二氧六环(Di)和N, N-二甲基甲酰胺(DMF)。根据溶解度、pH值、密度、不同体积、自由能、解离常数、缔合常数和溶剂化参数的实验数据进行了估算。同时对游离能和缔合能进行了计算。这里引用了其他溶剂化参数，如溶剂化数，以帮助解释溶解度趋势。本研究为正氯苯甲酸的溶解度提供了大量的数据，为生物学家将其作为食品保鲜剂提供了依据。

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Molal Solubility, Dissociation, Association and Solvation Parameters for Saturated O -Chlorobenzoic Acid Solutions in Various Solvents at 298.15 K

The molal solubility for saturated solutions of O -chlorobenzoic acid at 298.15 K in various solvents was de- termined. The solvents used are, water (W), ethanol (Et), dimethylsulphoxide (DMSO), acetonitrile (AN), methanol (Me), 1-4, dioxane (Di) and N , N-dimethylformamide (DMF). From the experimental data for solubility, pH , densities, the dif- ferent volumes, free energies, dissociation constants, association constants and solvation parameters were estimated. Also the free energies of dissociation and association were also evaluated. Other solvation parameters like the solvation numbers were cited here to help explaining the solubility trend.This work give a lot of data for the solubility of orthochlorobenzoic acid which help the biologist for using it as food preserver .The results were also discussed.

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Food and Public Health

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