Zirconium(IV) hydroxide

Zirconium (IV) hydroxide, often called hydrous zirconia is an ill-defined material or family of materials variously described as ${\displaystyle {\ce {ZrO2.{\mathit {n}}H2O}}}$ and ${\displaystyle {\ce {Zr(OH)4.{\mathit {n}}H2O}}}$. All are white solids with low solubility in water. These materials are widely employed in the preparation of solid acid catalysts.[1][2]

Zirconium(IV) hydroxide

Identifiers
CAS Number	14475-63-9^Y
3D model (JSmol)	Interactive image
ChemSpider	76194^Y
ECHA InfoCard	100.034.959
PubChem CID	84465
UNII	T5YIC9E1JX^Y
CompTox Dashboard (EPA)	DTXSID5065774
InChI InChI=1S/4H2O.Zr/h4*1H2;/q;;;;+4/p-4^Y Key: HAIMOVORXAUUQK-UHFFFAOYSA-J^Y InChI=1/4H2O.Zr/h4*1H2;/q;;;;+4/p-4 Key: HAIMOVORXAUUQK-XBHQNQODAM
SMILES [Zr+4].[OH-].[OH-].[OH-].[OH-]
Properties
Chemical formula	Zr(OH)4
Molar mass	159.253 g/mol
Appearance	white filter cake
Density	3.25 g/cm^3, solid
Melting point	550 °C (1,022 °F; 823 K) decomposes
Solubility in water	0.02 g/100 mL (20 °C)
Hazards
EU classification (DSD) (outdated)	not listed
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is ^YN ?)
Infobox references

These materials are generated by mild base hydrolysis of zirconium halides and nitrates. A typical precursor is zirconium oxychloride.[1]

References

1. Chen, Fang Ren; Coudurier, Gisele; Joly, Jean Francois; Vedrine, Jacques C. (1993). "Superacid and catalytic properties of sulfated zirconia". Journal of Catalysis. 143 (2): 616–26. doi:10.1006/jcat.1993.1304.
2. "Zirconium Hydroxide". Product Identification. ChemicalLAND21.com. Retrieved 2007-10-25.

External links

• "Zirconium(IV) hydroxide - MSDS". Sigma-Aldrich.