Cadmium permanganate is an inorganic compound with the chemical formula Cd(MnO4)2.

Cadmium permanganate can be obtained by reacting cadmium sulfate and barium permanganate.

After removing the barium sulfate precipitate, the solution is crystallized in the dark:[1] Cadmium permanganate can also be produced by reacting manganese heptoxide with cadmium oxide[2] or cadmium hydroxide.

[3] Cadmium permanganate hexahydrate loses water of crystallisation at 61~62 °C, and anhydrate can be obtained at a constant temperature of 90 °C.

The anhydrous form begins to decompose at 108 °C:[3]