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Zirconium(IV) hydroxide
Identifiers
CAS Number	14475-63-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	76194 ;
ECHA InfoCard	100.034.959
EC Number	238-472-7;
PubChem CID	84465;
UNII	T5YIC9E1JX ;
CompTox Dashboard (EPA)	DTXSID5065774 ;
	InChI InChI=1S/4H2O.Zr/h41H2;/q;;;;+4/p-4 Key: HAIMOVORXAUUQK-UHFFFAOYSA-J ; InChI=1/4H2O.Zr/h41H2;/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/cm3, solid
Melting point	550 °C (1,022 °F; 823 K) decomposes
Solubility in water	0.02 g/100 mL (20 °C)
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P332+P313, P337+P313, P362, P403+P233, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Zirconium (IV) hydroxide, often called hydrous zirconia is an ill-defined material or family of materials variously described as ZrO₂·nH₂O and Zr(OH)₄·nH₂O. All are white solids with low solubility in water. These materials are widely employed in the preparation of solid acid catalysts.^[2]^[3]

These materials are generated by mild base hydrolysis of zirconium halides and nitrates. A typical precursor is zirconium oxychloride.^[2]

References

^ "Zirconium hydroxide". pubchem.ncbi.nlm.nih.gov.
^ ^a ^b 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.
^ "Zirconium Hydroxide". Product Identification. ChemicalLAND21.com. Retrieved 2007-10-25.