Studies on the solvent extraction of morpholine dithiocarbamic acid complexes of divalent metal ions Mn, Fe, Co, Ni, Cu, Zn, Pb, Cd, Hg, and Sn were carried out, and the extraction constants and the overall stability constants were determined. The stability constants of complexes of Cu(I1) formed with various substituted dithiocarbamicacids, showed a variation of the stability constants with the basicity of the nitrogen and sulfur atoms in the reagents.