Thermal properties of 5-(subst)-amino-1,2,3,4-thiatriazoles

Abstract

The thermal properties of 5-(subst)-amino-l,2,3,4-thiatriazoles were studied using TG and DTA. 5-amino-l,2,3,4-thiatriazole was actively decomposed at the melting temperature. The active thermal decomposition proceeds at a very fast rate, being accompanied by exothermic reactions of recombination. In comparison with this, the different-5-(subst)-amino-l,2,3,4-thiatriazoles are decomposed at slower rates in several degradative steps. The effects of some substituents on the total course of thermal degradation are discussed.

Study of the thermal properties of 1,4-disubstituted thiosemicarbazides

“…When the determined apparent activation energies are compared with the defined enthalpies [5] of the endothermic changes, certain differences are observed. These arise from the fact that the endothermie effects of melting and alcohol release and also the cyclization effects overlap on the DTA thermograms, while the thermogravimetric results in this temperature range seem to be unambiguous.…”