Title: The dehydration of ZnSO4·7H2O and NiSO4·6H2O
Abstract: Using differential scanning calorimetry (DSC) in combination with effluent analysis, differential thermal analysis (DTA), thermogravimetric analysis (TG) and X-ray analysis, the dehydration of ZnSO4·7H2O and NiSO4·6H2O was investigated and a few transition enthalpies were measured. The dehydration of both compounds showed a great analogy. For NiSO4·6H2O the α—β phase transition was studied. The dehydration scheme of both hydrates can be given as follows: