Polonium(IV) sulfate is an inorganic compound, a salt of polonium and the sulfate anion with the chemical formula of . As anhydrous, it forms dark purple crystalline solid, and as a hydrate, it forms colourless or white crystals, and is soluble in water. It can be obtained by the reaction of polonium tetrachloride (or hydrated polonium dioxide)Susan A Brown, Paul L Brown. The Aqueous Chemistry of Polonium and the Practical Application of its Thermochemistry. Elsevier, 2019. and sulfuric acid. Polonium(IV) sulfate can be reduced to 无机化学丛书 第五卷 氧 硫 硒分族. 科学出版社. pp 424-425. by hydroxylamine in acidic solutions; it decomposes to polonium dioxide at 550 °C. It is radioactive and produces gases as it decays.
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