Rubidium perchlorate, RbClO₄

When rubidium chlorate is heated to a moderate temperature, it is converted into a mixture of Rubidium perchlorate, RbClO₄, and Rubidium chloride. The perchlorate is isomorphous with the corresponding potassium salt, but is less soluble in water, the solubility at 21.3° C. being 1.09 grams in 100 grams of water.