Аннотация:The liquid-liquid equilibrium at 298.15 K was measured for the water-phenol-acetone-n-butylacetate and water-phenol-Na2SO4-n-butyl acetate systems. The concentrations of impurities inphenol-containing water were 0.3 and 1.0 mass% for acetone and 1.0 and 5.0 mass% for Na2SO4.These systems are of practical interest for the solvent extraction of phenol-containing wastewaterfrom the cumene hydroperoxide route of phenol production and other extraction processes ofwater purification from phenol.