Nitrophenates of transition metals1 part II. DTA,explosion delay,impact and friction sensitivity studies

Abstract

Thermolysis of nitrophenates (C-NO₂ explosives) of transition metals of 3d-series have been studied by DTA, impact, friction, and explosion delay measurements. Explosion delay (D_E), explosion temperature (ET), activation energy for explosion (E?), and height for 50% explosion (h_50%) have been found to be in the order: trinitro<dinitro<p mononitrophenates of transition metals. Only trinitrophenates have been found to be friction sensitive. It has been observed that these salts dehydrate below 140°C and at higher temperatures corresponding metal oxide and nitrosubstituted diphenylethers (as intermediates) are formed. The oxidative decomposition reactions seem to occur in adsorbed phase between NO₂, MO, and radical species leading to explosion.