Investigation of urotropine thermal decomposition reaction in self-generated atmosphere by means of thermal analysis method

Urotropine decomposition in self-generated atmosphere was studied by means of differential thermal analysis. It was found out that under such conditions the urotropine was not sublimated with heat absorption as in case of investigations in the air or in the vacuum. At constant volume the urotropine decomposition enthalpy amounted to −98±5 kJmol. By means of mass-spectrometric, gas-chromatographic and X-ray analysis we identified pyrolysis products, which were hydrogen, nitrogen, ammonia, methan, methyl-amines and amorphous tar-form sediment.