Solubility of 3-Caffeoylquinic Acid in Different Solvents at 291–340 K

Abstract

Using a laser monitoring observation technique the solubilities of 3-caffeoylquinic acid in pure solvents, water, methanol, ethanol, 1-propanol, 1-butanol, and two mixed solvents, methanol + water, ethanol + water have been determined at temperature range from 291–340 K. The experimental data were correlated by the modified Apelblat equation, λh equation, and ideal model. The calculated solubilities were turned out very consistent with the experimental results, and the modified Apelblat equation shows the best agreement.