Potassium perrhenate（Cat No.:M054574）is an inorganic compound with the chemical formula KReO₄. It consists of potassium cations and perrhenate anions, where rhenium is in the +7 oxidation state, forming a tetrahedral ReO₄⁻ ion. This white, crystalline solid is soluble in water and resembles potassium permanganate in structure but is much less reactive. Potassium perrhenate is primarily used in inorganic and materials chemistry as a precursor for other rhenium compounds. It also finds applications in catalysis and electrochemistry. Its stability and well-defined oxidation state make it useful in high-temperature and oxidation-state-specific studies.