Zirconium(IV) sulfate is the name for a family of inorganic compounds with the formula Zr(SO4)2(H2O)n where n = 0, 4, 5, or 7. These species are related by the degree of hydration. At least some members of the series contain oxo ligands since zirconyl (ZrO2+) is pervasive. These compounds are white or colorless solids that often are soluble in water.
Preparation and structure Zirconium sulfate is prepared by the action of sulfuric acid on zirconium oxide:
ZrO2 + 2 H2SO4 + H2O → Zr(SO4)2(H2O)x The anhydrous sulfate is also claimed. These compounds adopt complex structures featuring 7- and 8-coordinated Zr centres. Both water and sulfate serve as ligands.
Uses Zirconium sulfate is used in tanning white leather, as a catalyst support, to precipitate proteins and amino acids, and as a pigment stabilizer.
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