Abstract

AbstractMixtures of solid inorganic oxidants (potassium chlorate, perchlorate and nitrate) with various combustible substances (carbon black, paraffin wax, starch and asphalt), when heated at relatively low temperatures, undergo an exothermal pre‐ignition reaction. This process, which is heterogeneous and in some cases a genuine solid‐solid reaction, elevates the temperature of the sample until ignition takes place. The plotting the natural logarithms of the time needed to the ignition point at various initiation temperatures, against 1/T°K. results in straight lines, permitting the evaluation of the critical increment of the Arrhenius equation.

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