Thermal behaviour of cobalt(II) dihydrogenphosphate tetrahydrate

Abstract

Heat treatment of crystal hydrates is one way to obtain anhydrous salts. This process in many respects is defined by extent of hydration of crystalline hydrate. The thermal transformation of соbalt(II) dihydrogenphosphate dihydrate Co(H2PO4)2·2H2O have been determined. Thermal properties of a tetrahydrate – Co(H2PO4)2·4H2O – are studied insufficiently.
The aim of this work was to study thermal behaviour of the Co(H2PO4)2·4H2O, to determine the sequence of thermal and structural transformations and how the extent of hydration affects these transformations.