2006Journal of Chemical & Engineering DataRequires access

Solubilities of Gallic Acid and Its Esters in Water

Lili Lu, Xiuyang Lü

Open publisher page 69 citations

Abstract

The solubilities of gallic acid and its esters (methyl gallate, propyl gallate, and octyl gallate) in water were determined in the temperature range (273.15 to 363.15) K by a static analytical method. The concentrations of gallic acid and the esters in saturated solution were analyzed by reverse-phase high-performance liquid chromatography. An “S” type curve was found for the solubilities of gallic acid and octyl gallate in water over the investigated temperature range. An empirical equation was proposed to fit the data for gallic acid and octyl gallate. On the other hand, the data of methyl gallate and propyl gallate were in good agreement with the simplified λ − h equation.

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What this paper is about

The solubilities of gallic acid and its esters (methyl gallate, propyl gallate, and octyl gallate) in water were determined in the temperature range (273.15 to 363.15) K by a static analytical method. The concentrations of gallic acid and the esters in saturated solution were analyzed by reverse-phase high-performance liquid chromatography. An “S” type curve was found for the solubilities of gallic acid and octyl gallate in water over the investigated temperature range. An empirical equation was proposed to fit the data for gallic acid and octyl gallate. On the other hand, the data of methyl gallate and propyl gallate were in good agreement with the simplified λ − h equation.

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Available abstract

The solubilities of gallic acid and its esters (methyl gallate, propyl gallate, and octyl gallate) in water were determined in the temperature range (273.15 to 363.15) K by a static analytical method. The concentrations of gallic acid and the esters in saturated solution were analyzed by reverse-phase high-performance liquid chromatography. An “S” type curve was found for the solubilities of gallic acid and octyl gallate in water over the investigated temperature range. An empirical equation was proposed to fit the data for gallic acid and octyl gallate. On the other hand, the data of methyl gallate and propyl gallate were in good agreement with the simplified λ − h equation.

Key concepts: Gallic acid, Methyl gallate, Chemistry, Gallate, Propyl gallate, Organic chemistry, Chromatography, Nuclear chemistry

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