Via the Piloyan method, activation energies E were determined for polynitroaromatic compounds containing two picryl groups, and for melamine derivatives. At the same time the initial temperatures of exothermic decomposition TD were determined by means of non-isothermal DTA. Linear relationship were derived between E 9 T~ 1 and published kinetic data obtained from the study of HNB, HNAB, DIPS, DIPSO, HNS and TPM by isothermal manometry. On the basis of the derived relationship, as well as E and T~ values from DTA measurements, kinetic data were calculated for DPA, K D P A , DMHNB, DPM, DPE and TMPM with the manometric method.