Measurement and Correlation for Solubilities of Succinic Acid and Glutaric Acid in ε-Caprolactone + Acetic Acid Mixtures and ε-Caprolactone + Cyclohexanone Mixtures

Abstract

By using the method of dynamic laser, the solubilities of succinic acid and glutaric acid in ε-caprolactone + acetic acid mixtures and ε-caprolactone + cyclohexanone mixtures were determined under atmospheric pressure. The experimental temperature ranged from 293.35 to 340.65 K, and the mass fraction of ε-caprolactone in the solvent mixtures ranged from 0.0 to 1.0, respectively. It was found that with the increase of the temperature at constant concentration, the measured solubilities of succinic acid and glutaric acid in ε-caprolactone + acetic acid mixtures and ε-caprolactone + cyclohexanone mixtures would increase. Moreover, when the mass fraction of ε-caprolactone in ε-caprolactone + acetic acid mixtures increases at the same temperature, the measured solubilities of succinic acid and glutaric acid would decrease. However, it would increase as the mass fraction of ε-caprolactone increases for the system of ε-caprolactone + cyclohexanone at the same temperature. The experimental data were correlated by using the modified nonrandom two liquid activity coefficient model. The maximum value of average relative deviation was 1.50%.

Measurement and Correlation of Solubilities of 4-Methylbenzoic Acid and Terephthalic Acid in Eight Organic Solvents

“…The measurement of solubility was carried out by the laser dynamic method, which was described in detail in the literature. − …”

Solubilities of Adipic Acid, Glutaric Acid, and Succinic Acid in Dimethyl Glutarate + Methanol Mixtures: Experimental Measurement and Thermodynamic Modeling

“…When the solute particle disappeared exactly, the intensities of the transmitted laser would reach the maximum value. We recorded the temperature at that time as the temperature of the solid–liquid equilibrium (SLE) point, and there are detailed descriptions in our previous works. ,,, …”

“…To ensure the reliability and accuracy of the experimental method and apparatus, the solubilities of AA (GA, SA) in pure cyclohexanone were measured and compared with the literature data, respectively. ,,,− The results are shown graphically in Table and Figures to . The results have good agreement with the literature data, which indicates that the experimental technique in this work is reliable and accurate.…”

“… a Standard uncertainties u are u ( T ) = 0.12 K, u r ( p ) = 0.05, and u r ( x ) = 0.10. x represents the experimental molar fraction of solubility in pure cyclohexanone. b RD = ( x c1 – x )/ x , where x and x c1 represent the molar fraction of solubility of experimental and average values in the literature (by the dynamic method) at the same temperature, respectively. ,,,,− c ARD is the averaged relative deviation. …”

“…8 Some solubilities of AA (GA, SA) in other solvent mixtures or pure solvent have been also reported. The solubility of SA in acetic acid + ε-caprolactone solvent mixtures, 9 cyclohexanone + ε-caprolactone solvent mixtures, 9 diethylene glycol + urea solvent mixtures, 10 ethanol + water solvent mixtures, 11 ethanol + AA solvent mixtures, 12 acetone + GA + AA solvent mixtures, 13 cyclohexanone + acetic acid solvent mixtures, 14 methanol + water, ethanol + water, and binary aqueous ethanol solvents 15 has been measured. The solubility of GA in acetic acid + ε-caprolactone solvent mixtures, 17 cyclohexanone + ε-caprolactone solvent mixtures, 16 and cyclohexanone + acetic acid solvent mixtures 17 has been reported.…”