The solubility of o-phthalic acid in methanol + water and methanol + butyl acetate was measured at temperatures ranging from (295.87 to 359.75) K using a laser-monitoring observation technique at atmospheric pressure. The experimental data were correlated with the Apelblat equation. The overall σ of 159 data points was 0.70 %. The apparent molar enthalpies of o-phthalic acid in the two systems have been determined and provide a heat transmission basis for the design of a crystallizer.
2022
By use of a laser-monitoring observation technique, the solubilities of potassium p-chlorophenoxyacetate
in ethanol + water were measured at temperatures ranging from (295.61 to 358.16) K using a synthetic
method at atmospheric pressure. The experimental data were correlated with an empirical equation.
Results indicated that the method was practical and the data measured were acceptable.
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