Could someone help me with the interpretation of the DSC plot? It was measured for polyoxometalate, i.e. silicotungstic acid, H4SiW12O40 in aqueous/organic solvent. The literature data is hard to find. The first exothermal signal is probably due to the solidification point (but why it splits?). And I have no idea how to interpret the second signal at -43 deg. I hope someone here has a better experience with thermal analysis than me...