Über die Löslichkeit des Kadmiumferrits in Ameisensäure

The dissolution process of the system CdFe₂O₄/H⁺ has been examined in various concentrations of formic acid. Study of the reaction at 20°, 40°, and 60°C revealed large divergences between expected stoichiometricity in corresponding amounts of ions passing into the solution. The stoichiometry-like process has been achieved only by using 10m-HCOOH and the temperature of 60°C. X-ray identification of preparations after breaking off the dissolution process allowed to find besides cadmium ferrite another iron oxide phases, namely α-Fe₂O₃ and γ-Fe₂O₃.