Potassium ferrate is a compound with a formula of K₂FeO₄. This is an unstable potassium salt of ferric acid, which itself is too unstable to exist in aqueous solution. It is a dark purple crystalline solid that dissolves to form a reddish-purple solution. This solution is stable at high pH, but at neutral or lower pH, the ferrate decomposes, liberating oxygen.Potassium ferrate is a very strong, but relatively mild oxidizer.

Properties

Chemical formula : K₂FeO₄

Molar mass : 198.04

Appearance : Dark purple crystals

Odor : Odorless

Density : 2.829 g/cm³

Melting point : 198 °C (388 °F; 471 K) (decomposes)

Boiling point : Decomposes

Uses of Potassium Ferroate

1. Potassium ferroate has become a new type of green and environmentally friendly water treatment material

2. Potassium ferroate is used for the treatment of industrial wastewater and urban domestic sewage

3. Potassium ferroate is used for aquaculture water treatment in fish ponds

4. Potassium ferroate is used for marine anti-fouling treatment

5. Potassium ferroate is used for the regeneration of swimming pool water

6. Potassium ferrite is used as an oxidant of sulfonic acid, nitrite, ferrocyanide and other inorganic substances in chemical production, in zinc smelting to remove manganese, antimony and arsenic, and in the tobacco industry for cigarette filters.