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Some alkyl N-aryldithiocarbamates were prepared and their thermal behaviour was studied using TG, DTG and GC MS . Thermogravimetric data were used for calculations of the apparent kinetic parameters of the thermal decomposition. Decomposition proceeds as a reaction with order n = 1, except that of butyl N-phenyldithiocarbamate which follows order n = 0. The apparent activation energies of the processes were found to be above 100 kJ mol−1 for almost all compounds studied. The thermally induced decomposition of the compounds occurs as a singlestage process, except that of ethyl N-tolyldithiocarbamate where three steps could be distinguished. The products of the decompositions were indentified by gas chromatography-mass spectrometry and used for predictions of the mechanisms involved. |
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