What is is rubidium sulfate soluble in water?

Rubidium sulfate is highly soluble in water. It is a white crystalline compound with the chemical formula Rb2SO4 and a molar mass of 267.48 g/mol. Rubidium sulfate readily dissolves in water, forming a clear colorless aqueous solution. The solubility of rubidium sulfate in water increases with temperature. At 20°C, the solubility of rubidium sulfate in water is approximately 235 g/L. The high solubility of rubidium sulfate in water makes it a useful compound in various applications such as analytical chemistry, glass industry, and as a component of fertilizers.