Potassium manganate

Chemical compound

Potassium manganate is the inorganic compound with the formula K2MnO4. This green-colored salt is an intermediate in the industrial synthesis of potassium permanganate (KMnO4), a common chemical. Occasionally, potassium manganate and potassium permanganate are confused, but each compound's properties are distinct.

From Wikipedia, under CC BY-SA. More on occurri.