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  • 1 Institute of Metallurgy and Ore Benefication of the Academy of Sciences of the Kazakh SSR Alma-Ata USSR
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A modification to the derivatograph has been designed that allows thermoanalytical investigations of chemical compounds, including sulphides and acids, that evolve aggressive gases such as CO, SO2, S, etc. during warming. Application of this modification is exemplified by studies on the thermal dehydrogenation of titanium hydride (TiH1.85) and on the interaction of rhenium disulphide (ReS2) with concentrated sulphuric acid.