Zirconyl chloride

Zirconyl chloride (6H2O) [7699-43-6] M 286.2, m 150 (loses 6H2O). Crystd repeatedly from 8M HCl as ZrOCl2.8H20. On drying ZrOCl2.6H20 m 150°. The product was not free from hafnium. 

Dissolve 1 g zirconium(IV) oxide chloride octahydrate (zirconyl chloride) in 50 ml methanol. 

Note Flavonoids react with the reagent even at room temperature [1] mycotoxins, steroids, purines, pyrimidines, cardiac glycosides and lipids only react on heating [2, 4-6]. Zirconyl sulfate can be used to replace the zirconyl chloride in the reagent this is reported to result in an increase in the sensitivity to certain groups of substances (e.g. cholesteryl esters, triglycerides) [4]. 

Zirconyl chloride can be used to stabilize swelling clays in both acidic environments and in the presence of 600 F steam (160). No well shut-in time is required for polymerization to occur so zirconyl chloride may be used in conjunction with hydraulic fracturing treatments (161). 

From 1958 to 1970 inorganic salts such as CaCl2(53,55,56), MgCl2(57), KC1(55-58), hydroxyaluminum chloride(59-63), and zirconyl chloride(64-67) were introduced and found acceptance as clay protection additives. Each salt has its own peculiar set of advantages and disadvantages. It is now routine to include 2% KC1 by weight of water as a clay treatment chemical in nearly all fracture waters. 

Angstadt, R.L. and Tyree, S.Y. "The Nature of Zirconyl Chloride in Strong Hydrochloric Acid Light Scattering," J. Inorganic Chem.. 1962, 24, 913 917. 

If necessary a preconcentration was carried out on this solution to lower the detection limits of the method. Preconcentration was achieved by a method involving co-precipitation of the antimony with hydrous zirconium oxide in which the digest is stirred with 150mg zirconyl chloride and the pH adjusted to 5 with ammonia to coprecipitate antimony and hydrous zirconium oxide. The isolated precipitate is dissolved is 7M hydrochloric acid and 30% sulphuric acid. Antimony is then converted to the pentavalent state by successive treatment with titanium III chloride and sodium nitrite and excess nitrite destroyed by urea. 

The crude tetrachloride mixture of zirconium and hafnium is dissolved in ammonium thiocyanate solution. The solution is extracted with methyl isobutyl ketone (MIBK). MIBK is passed countercurrent to aqueous mixture of tetrachloride in the extraction column. Halhium is preferentially extracted into MIBK leaving zirconium in the aqueous phase. Simultaneously, zirconium tetrachloride oxidizes to zirconyl chloride, ZrOCb. When sulfuric acid is added to aqueous solution of zirconyl chloride, the chloride precipitates as a basic zirconium sulfate. On treatment with ammonia solution the basic sulfate is converted into zirconium hydroxide, Zr(OH)4. Zirconium hydroxide is washed, dried, and calcined to form zirconium oxide, Zr02. 

Reaction with nitric acid forms zirconium nitrate and with hydrochloric acid, zirconyl chloride, ZrOCb, is produced. 

Also, it is prepared by treating zirconyl chloride with hot concentrated sulfuric acid ... 

Zirconyl chloride is used to make pigment toners and improve properties of color lakes of acid and basic dyes. Also, it is used to prepare body deodorants and antiperspirant, water repellant, dye precipitant, catalysts, and many zirconium compounds. 

Zirconium Carbide Zirconium Hydride Zirconium Hydroxide Zirconium Nitrate Zirconium Oxide Zirconium Silicate Zirconium Sulfate Zirconium Tetrachloride Zirconyl Chloride Chemical Substances Index CAS Registry Number Index... 

Arsenates have been described in one case exploiting the fact that the zirconyl cation forms a water-soluble arsenite but insoluble arsenate. By adding nitric acid to a solution of zirconyl chloride and sodium arsenite, the arsenite was oxidized to arsenate by the nitric acid, precipitating the insoluble zirconyl arsenate [32]. As for phosphates (and probably more readily), arsenates might be reduced to arsenides. 

Zirconium Oxide Chloride Zirconium Oxychloride Zirconium Oxychloride Hydrate Zirconium Sulfate Zirconium Sulfate Tetrahydrate Zirconyl Chloride... 

Tetracyclines Animal tissues, eggs Zirconyl chloride LC-Fluorometric 117,118... 

Although tetracyclines possess the inherent ability to fluoresce, few methods exploiting this property have been reported (300, 306, 309). Instead, fluorometric methods based on the reaction of tetracyclines with suitable derivatizing agents have been developed. The use, for example, of zirconyl chloride as a fluorescence label in the postcolumn derivation of tetracyclines, has allowed highly selective and sensitive detection of these antibiotics in animal tissues (294, 295). 

Zirconyl chloride (8H20) [13520-92-8] M 322.3. Recrystd several times from water [Ferragina et al. JCSDT 265 1986]. 

Anhydrous zirconyl chloride forms insoluble, yellow 1 2 adducts, ZrOCl2(2-HOCFive-coordinate structures in which the salicylaldimines behave as N-bonded monodentate ligands have been suggested on the basis of IR spectra.684... 

Upon dissolving in water, zirconyl chloride forms ZrO2 which is the zirconium-containing moiety added to the polymer. The solution is highly acidic with a 0.1 M solution of zirconyl chloride giving a pH of about 1.5. This is probably a result of a reversible reaction of Zr0+z with water forming protons. 

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