Rubidium carbonate is an inorganic compound with the chemical formula Rb<sub>2</sub>CO<sub>3</sub>. It is a white, hygroscopic solid that readily dissolves in water.
Rubidium carbonate can be prepared by reacting ammonium carbonate and rubidium hydroxide.
It is used in glassmaking to enhance stability and durability whilst reducing conductivity.
It is also used as a part of a catalyst to prepare short-chain alcohols from feed gas.