Solubilities of Benzoic Acid and Phthalic Acid in Acetic Acid + Water Solvent Mixtures

Abstract

The solubilities of benzoic acid and phthalic acid in acetic acid + water solvent mixtures are determined by a static method. The experimental temperature ranges from (298.3 to 367.9) K, and the mass fraction of acetic acid in the solvent mixtures ranges from 0.8 to 1.0. The experimental results show that, within the temperature range of the measurements, the solubility of benzoic acid and phthalic acid in all the mixtures shows an increasing trend as the temperature increases. The solubility of benzoic acid decreases with increasing mass fraction of water. For the solubility of phthalic acid in acetic acid + water within the solvent composition range of the measurements, below 325.2 K, the higher the mass fraction of water, the less the solubility. However, above 325.2 K the higher the mass fraction of water, the greater the solubility. A simple explanation was given for this "maximum-solubility effect". The experimental data was correlated by the Non-Random Two Liquids (NRTL) activity coefficient model, and the model parameters were regressed.

Solubility of benzoic acid in acetone, 2-propanol, acetic acid and cyclohexane: Experimental measurement and thermodynamic modeling

“…2. In the case of acetic acid, Wang et al [15] recently reported their measured solubility data, which is considerably lower than that from Liu et al [14], Ma and Xia [16] and Kendall [41]. The comparisons are shown in Fig.…”

“…Solution crystallization is often used as the final purification step in its production. A lot of research has been conducted to understand the solubility of benzoic acid in different solvents such as water, alcohols, acids, alkanes, and aromatics, and some of the data can be found in several solubility data compilations [6][7][8] and journal articles [9][10][11][12][13][14][15][16]. In this work, the solubility of benzoic acid in four different categories of organic solvents of acetone, 2-propanol, acetic acid and cyclohexane was investigated.…”

“…Comparison of the solubility of benzoic acid in acetic acid: (᭹) this work; ( ) Wang et al[15]; ( ) Liu et al[14]; ( ) Ma and Xia[16]; ( ) Kendall[41].…”

Measurement and correlation of solubility of 4-chloro-2,5-dimethoxynitrobenzene and 4-chloro-2,5-dimethoxyaniline in methanol, ethanol, xylene and toluene

“…The Wilson and the NRTL models, which have been successfully used to describe the (solid + liquid) equilibrium (SLE) [9][10][11][12][13][14], were employed to correlate the experimental results. The interaction parameters of the models were obtained.…”

Solubilities of 5,10,15,20-Tetraphenylporphyrin and 5,10,15,20-Tetraphenylporphyrin Manganese(III) Chloride in Binary Ethanol + Water Solvent Mixtures

“…20 The Nyvlt equation was used to correlate the experimental data. To understand the solubility behavior of TPP and TPPMnCl in ethanol + water solvent mixtures, the thermodynamic parameters including dissolution enthalpy, dissolution entropy, isobaric heat capacity, and Gibbs free energy were investigated in detail with the Clark−Glew equation.…”