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TGA curve of (1) pyrogallol tetarto-hydrate recorded at a heating rate of 10 °C min–1. DSC thermograms of the tetarto-hydrate in (2) a three pin-holed pan and a heating rate of 2.5 °C min–1, (3) one pin-holed pan at a heating rate of 5 °C min–1, and (4) a sealed pan at a heating rate of 10 °C min–1. DSC thermogram of the anhydrate (5) recoded in a one pin-holed pan at a heating rate of 10 °C min–1.
