Thermal decomposition of triaminoguanidinium nitrate

The kinetics of thermal decomposition of triaminoguanidinium nitrate (TAGN) was studied for the solid and liquid (solution) states of aggregation. The decomposition of crystalline powdered TAGN develops with severe self-acceleration. Its formal kinetic characteristics are determined. The main cause of the acceleration is the progressive melting of the solid during its thermal decomposition. The decomposition of TAGN in solution is severalfold faster than that in the solid state and proceeds at a rate decreasing with time. The main gaseous products of TAGN decomposition are N$_2$, N$_2$O, and H$_2$O. The chemistry of the processes involved in TAGN decomposition are discussed.