Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

The solubility of isomaltulose in five monosolvents (water, methanol, ethanol, isopropanol, acetone) and four different binary solvents (water + methanol, water + ethanol, water + isopropanol, water + acetone) was measured by a gravimetric method at temperatures ranging from (283.15 to 323.15) K. Results showed that the solubility of isomaltulose increased with increasing temperature. The order of isomaltulose solubility in these selected pure solvents at given temperature was water greater than methanol greater than ethanol greater than isopropanol greater than acetone. In water + acetone solvent system, the solubility of solute just increased with increasing water mole fraction. While in water + alcohol solvent systems, the minimum solubility values were achieved at a certain solvent composition due to the influence of polarity and hydrogen bond. The Apelblat model, the CNIBS/R-K model, and the modified version of Jouyban-Acree model (the Apel-JA model) were used to correlate the experimental data, and the results indicated that those models were all suitable to correlate the solubility results.