Thermogravimetric analysis:
Examples of TGA curves:
Thermal decomposition of calcium oxalate monohydrate studied by TGA
(a) Ca(COO)2 H2O → [200°C] → Ca(COO)2 + H2O (g);
(b) Ca(COO)2 → [500°C] → CaCO3 + CO (g); and,
(c) CaCO3 → [800°C] → CaO + CO2 (g).
Figure 23.05 depicts the mass change corresponding to each reactions of calcium oxalate monohydrate.
Figure 23.05: TGA curve of calcium oxalate monohydrate [2].
Ref.[2]. This sketch was taken from the Philips Research bulletin, Thermal Analysis.