Upper critical solution temperatures (UCST) and mutual solubilities of phenol and water were studied with 0.45 mmol kg−1 (mm kg−1) dodecyl trimethylammonium bromide, trimethylsulphoxonium iodide and methyltrioctylammonium chloride. The surfactants decrease the UCSTs by about 0.51–1.98°C with slight enhancement in mutual solubilities. Mole fractions of surfactants were restricted to 0.002 to 0.005 range, their hydrophilic and hydrophobic interactions enhance solubility of phenol in water by about 0.0456% as compared to water-phenol systems.
Russian Journal of Applied Chemistry – Springer Journals
Published: Jan 28, 2007
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