Rubidium percarbonate, Rb₂C₂O₆

The Rubidium percarbonate, Rb₂C₂O₆, is produced by electrolytic oxidation of a concentrated aqueous solution of rubidium carbonate. It resembles the corresponding potassium salt.

Peltner has described rubidium percarbonates of the formulae Rb₂CO₄,2H₂O₂,H₂O; Rb₂CO₄,H₂O₂,2H₂O; and 2Rb₂CO₄,5H₂O. They are unstable hygroscopic substances, and on contact with water evolve oxygen.