Solubility data were determined experimentally for the following pairs of liquids: 1-butanol-water, benzene-water, methanol-hexane, pentane-water, toluene-water, 1,2-dichloroethane-water, and methylene chloride-water, employing equipment normally used to obtain liquid-liquid equilibrium data. The equipment was composed of three identical linked cells kept at constant temperature by a thermostated water bath. The temperature range from 5.8 to 78.4 C was covered. The effect of temperature on solubility in water was evaluated and discussed. For the systems studied, it was concluded that, unexpectedly, increasing temperature does not raise the mole solubility fraction of methylene chloride in water.
Solubility data of vitamin C are essential to fields such as medicine, food, and biochemistry. Regarding recent publications, for hydrotropism studies, it is shown that the knowledge of the solubility of vitamin C in different solvents is very important. In the present paper, solubility data of vitamin C in water, ethanol, propan-1-ol, water + ethanol, and water + propan-1-ol were measured by a gravimetrical method at (298.15 and 308.15) K at an atmospheric pressure of 0.0920 MPa. The solubility data were correlated against the mass fraction of water. The solubility of vitamin C in water, ethanol, and water + ethanol was high compared to that with propan-1-ol and water + propan-1-ol.
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