The extraction of caffeine with aliphatic alcohols C3–C9 from aqueous solutions in the presence of a salting-out agent (ammonium sulfate) is studied. Quantitative characteristics of extraction are calculated: the distribution coefficients (D) and the degree of recovery (R, %). Relations are found between logD of caffeine and the length of the hydrocarbon radical in the alcohol molecule, along with certain physicochemical properties of the extragents.
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