Zirconium(IV) sulfate

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Zirconium(IV) sulfate
Other names
zirconium disulfate
ECHA InfoCard 100.035.162
RTECS number ZH9100000
Zr(SO4)2(H2O)x ( x = 0, 4, 5, 7)
Molar mass 285.35 g/mol (anhydrous)
355.40 g/mol (tetrahydrate)
Appearance white solids
Density 3.22 g/cm3 (anhydrous)
2.85 g/cm3 (tetrahydrate)
52.5 g/100 mL (tetrahydrate)
Lethal dose or concentration (LD, LC):
3500 mg/kg (rat, oral)[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

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, 7. These species are related by the degree of hydration. They are white or colourless solids that are soluble in water.

Preparation and structure[edit]

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 known.

These compounds adopt complex structures featuring 7- and 8-coordinated Zr centres. Both water and sulfate serve as ligands.[2][3]


Zirconium sulfate is used in tanning white leather, as a catalyst support, to precipitate proteins and amino acids, and as a pigment stabilizer.


  1. ^ "Zirconium compounds (as Zr)". Immediately Dangerous to Life and Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  2. ^ Bear, Isabel J.; Mumme, W. G. "Crystal chemistry of zirconium sulfate. III. Structure of the β-pentahydrate, Zr2(SO4)4(H2O)8.2H2O, and the interrelationship of the four higher hydrates" Acta Crystallogr. 1969. B25, 1572-1581. doi:10.1107/S0567740869004341
  3. ^ Squattrito, Philip J.; Rudolf, Philip R.; Clearfield, Abraham "Crystal structure of a complex basic zirconium sulfate" Inorganic Chemistry 1987, vol. 26, 4240-4.doi:10.1021/ic00272a020