Solubilities of Potassium Hydrogen Tartrate and Potassium Chloride in Water + Ethanol Mixtures

The solubilities of potassium hydrogen tartrate (KHT) in water, water + ethanol, and water + ethanol + KCl, as well as of potassium chloride in water + ethanol mixtures, were determined, using the polythermal method, at different temperatures. Equations were adjusted to the experimental data, enabling the calculation of salts solubilities as a function of temperature and ethanol content in the solvent. For KHT, an additional dependence on the KCl concentration was also included. Experimental data were compared with literature values.