KINETICS OF THE THERMAL-DECOMPOSITION OF DINITRAMIDE - 2 - KINETICS OF THE REACTIONS OF DINITRAMIDE WITH DECOMPOSITION PRODUCTS AND OTHER COMPONENTS OF A SOLUTION

The kinetic regularities of the thermal decomposition of dinitramide i n aqueous solutions of HNO3, in anhydrous acetic acid, and in several other organic solvents were studied. The rate of the decomposition of dinitramide in aqueous HNO3 is determined by the decomposition of mixe d anhydride of dinitramide and nitric acid (N4O6) formed in the soluti on in the reversible reaction. The decomposition of the anhydride is a reason for an increase in the decomposition rates of dinitramide in s olutions of HNO3 as compared to those in solutions in H2SO4 and the se lf-acceleration of the process in concentrated aqueous solutions of di nitramide. The increase in the decomposition rate of nondissociated di nitramide compared to the decomposition rate of the N(NO2)(2)(-) anion is explained by a decrease in the order of the N-NO2 bond. The increa se in the rate constant of the decomposition of the protonated form of dinitramide compared to the corresponding value for neutral molecules is due to the dehydration mechanism of the reaction.