THERMAL-DECOMPOSITION OF ANALYTICALLY IMPORTANT THIOCYANATOCHROMATES(III) .2.

The thermal decomposition of the crystalline complex salts Pb3[Cr(SCN)6]2 and Bi[Cr(SCN)6] has been studied. On the basis of the thermal analysis, and from the X-ray diffraction and chemical analyses of their decomposition products, schematic representations of their thermal decomposition reactions have been established. From their thermogravimetric curves, the activation energies and reaction orders have been calculated. A comparison of the thermal stability of the compounds is made.