| IUPAC name
| Other names
Basic zirconium chloride
Zirconium chloride oxide
Zirconium dichloride oxide
Zirconyl chloride octahydrate
|Molar mass||1289.00 g/mol|
|Solubility||Insoluble in conc. HCl|
|Safety data sheet||Sigma-Aldrich|
|Lethal dose or concentration (LD, LC):|
LD50 (Median dose)
|400 mg/kg, (rat, intraperitioneal)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Zirconyl chloride is probably the most important, stable and water-soluble zirconium compound. Often referred to as ZrOCl2.8H2O, its true structure is much more complicated and represented by: [Zr4(OH)8(H2O)16]Cl8(H2O)12.
It should not be confused with anhydrous zirconium tetrachloride - ZrCl4.
At high temperatures, this compound will dehydrate.
It is highly soluble in water but insoluble in conc. HCl.
It is sold by chemical suppliers.
The compound can be prepared by dissolving freshly prepared zirconium hydroxide - Zr(OH)4 - in strong, hot HCl. The obtained solution is then boiled in, in the presence of plenty acid reserve (to prevent hydrolysis). Alternatively, a solution of zirconyl chloride can be gassed with HCl gas to saturation, upon which pure ZrOCl2.8H2O then crystallises out.
Zirconyl chloride solutions precipitate Zr(OH)4 with ammonia solutions, which can then be dissolved in any relevant acid, after filtering and washing.
May be harmful, wear proper protection.