Easy synthesis of CaB2O4 via pyrolysis of calcium fructoborate

The investigation of the thermal behavior of calcium fructoborate samples of composition Ca(C6H10O6BO)2.3.5H 2O showed that CaB2O4 is generated as the final solid pyrolysis residue. On the basis of these observations a new, very easy, synthetic procedure for the preparation of high purity samples of this calcium borate is proposed. The material was characterized by X ray powder diffractometry and IR spectroscopy.