Solid dithizonates of Fe(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(lI) and Pb(II), have been prepared. Thermogravimetry (DTG), derivative thermogravimetry (DTG), differential scanning calorimetry (DSC), X-ray diffraction powder patterns and elemental analysis have been used to characterize and study the thermal stability and thermal decomposition of these compounds.