DETERMINATION OF CHEMICAL STABILITY OF GUNPOWDERS BY QUALITATIVE AND QUANTITATIVE METHODS

摘要

This work presents the results from the analyses made on monobasic gunpowder, which consists of two types of stabilizers (diphenylamine and centralit I) with total mass of representation of about 1,3%. The content of the residual stabilizer of gunpowder treated at different temperature and at different length of time was determined by using two quantitative methods.. By processing and comparing the results gained at raised temperature an attempt was made to foresee the time of stability of the gunpowder in normal conditions of storing. As quantitative methods in this case The Hansen test and liquid chromatography (HPLC) were applied According to the first method the gunpowder was treated at 110 ℃ in the period from 0 to 72 h, and the results were validated by using pH - meter. The second method was used to determine the content of the residual stabilizer at the same gunpowder treated at 110 ℃ as long as the content of the active stabilized does not go below 50% m/m from the starting one.