thermal stability of sulphate
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The thermal decomposition of eleven (II) sulphates has been studied by a combination of thermogravimetric and differential thermal analysis. The relative decomposition temperatures are: MnSO4 755, FeSO4 537, CoSO4 708, NiSO4 675, CuSO4 598, ZnSO4 646, CdSO4 816, PbSO4 803, MgSO4 895, CaSO4 1149, and SrSO4 1374°C. Factors possibly influencing thermal stability of such salts are discussed, with special consideration of the effects of the metal's electronegativity and polarizing power on the condition of the anion.
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