Chromium(III) perchlorate


Chromium perchlorate is an inorganic compound, a salt with the chemical formula Cr3. It's hexahydrate Cr3·6H2O is a cyan solid that dissolves in water.

Preparation

Chromium perchlorate can prepared by reacting chromium oxide or chromium hydroxide with perchloric acid:

Hydrates

Chromium perchlorate has many hydrates, such as the hexahydrate Cr3·6H2O and a nonahydrate Cr3·9H2O. All of them are cyan substances that are soluble in water.

Related compounds

  • Cr3 will react with NH3 in suitable conditions to form an orange hexammine complex Cr3·6NH3. Other compounds with the general formula Cr3x are also known. When x = 3, this compound is red, when x = 4 or 5, it is orange. The hexammine complex will explode.
  • Cr3 can also form complexes with N2H4, such as purple Cr3·2N2H4.
  • Cr3 can also form complexes with urea, such as Cr3·6CO2 with a hexagonal structure.