Determination of carbon and hydrogen in phthalocyanines

Optimum conditions of oxidative destruction of phthalocyanines have been studied with the use of various catalysts of burning. Oxides of some transition metals have been used as catalysts: CuO, V2O5, WO3, MoO3, Cr2O3. The objects of investigation are: phthalocyanine itself (C32H18N8) and Fe, Cu, Ni, Co, and V-metal phthalocyanines. The most effective burning catalyst turned out to be chromium oxide; the rest catalysts are not effective. The results are given of analyzing phthalocyanines for carbon and hydrogen content without catalysts and with chromium oxide used as a catalyst