Abstract
The thermal decomposition of several sulfonamides and potassium salts of sulfonamides was investigated. The analyses were performed using a derivatograph in an air atmosphere, sample sizes were from 50 to 200 mg and heating rate from 2.5 to 20 K min-1. It has been established, that the thermal destruction of studied compounds occurs via three stages with formation of potassium carbonate as a final product of the complete combustion of potassium salts of sulfonamides. The temperature ranges, in which the analyzed compounds undergo thermal transformations were established. For evaluation of the results the principal component analysis (PCA) was applied. By this method the influence of the specific functional groups on the thermal decomposition of sulfonamides and potassium salts of sulfonamides was determined. It has also been recognized, that better discrimination among the analyzed compounds is obtained for the data set of the DTA.
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Wesołowski, M., Kosecka, E., Erecińska, J. et al. The influence of chemical structure of sulfonamides on the course of their thermal decomposition. Journal of Thermal Analysis and Calorimetry 74, 465–476 (2003). https://doi.org/10.1023/B:JTAN.0000005182.14513.e8
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DOI: https://doi.org/10.1023/B:JTAN.0000005182.14513.e8