A new extractant(NPPFA) was synthesized from 2-pyridinecarboxylic acid and pyrrolidine, and its extraction behavior for phenol was studied. The results show that the distribution ratio of phenol is high, and there is no emulsion and the two phases separate easily. By application of the methods of double-logarithmic slope and continuous variation, the composition of the extracted species was determined to be C_(6)H_(5)OH·NPPFA. The enthalpy of the extraction reaction was calculated to be ΔH~(0)=-42.59 kJ/mol...