Liquid-liquid equilibrium (LLE) data were measured under atmospheric pressure for (1-butanol + water + 2,6-diaminopyridine) at (289.55, 300.65, and 317.05) K and for (1-butanol + water + 2-aminopyridine) at (295.85, 307.15, and 319.65) K. The experimental data were correlated by the Hand equation. The correlated tie line results were compared with the experimental ones, and good agreements were obtained with an average deviation of 3 %. Both the selectivities (S) and distribution ratios (K) of the aminopyridines were calculated from the LLE data, and the results showed that 1-butanol was a suitable solvent used for the extraction of the aminopyridines from water.