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

ABSTRACT

The solubilities of m-phthalic acid in seven monobasic alcohols, methanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 1-pentanol, and 1-hexanol, were experimentally determined by a gravimetric method in the temperature range of (278 to 358) K. The measured solubilities of m-phthalic acid in methanol agreed well with literature data. The experimental results showed that methanol had the best solubility, whereas 1-hexanol presented the lowest solubility, and the solubility decreased with an increase in the carbon atom number in the alcohol structure. For the isomer alcohols, 1-propanol had less solubility than 2-propanol, whereas 1-butanol showed better solubility than 2-butanol. The measured solubility data were correlated with the eh equation (Buchowski-Ksiazczak equation). The parameters in the equation were regressed from the measured data, and the calculated root-mean-square deviation (rmsd) was 3.33 * 10-4 for the total 123 data points.