13520-92-8 Usage
Synthesis
Zircon is melted with caustic soda, rinsed, desiliconized, and then reacted with sulfuric acid, and then ammonia water is added to obtain zirconium hydroxide precipitate. Finished zirconium oxychloride.
Chemical Properties
solid
Uses
Zirconium dichloride oxide is utilized as a precursor to prepare other zirconium compounds. It is employed in acid dyes, pigment toners and antiperspirants. It finds application as a rubber additive and a fiber treatment agent. It is also used in paint drying, refractories, ceramics and glaze.
General Description
This product is used as a potential green catalyst.
Purification Methods
Recrystallise the chloride several times from water [Ferragina et al. J Chem Soc, Dalton Trans 265 1986]. Recrystallisation from 8M HCl gives the octahydrate as white needles on concentrating. It is also formed by hydrolysing ZrCl4 with water. After one recrystallisation from H2O, 99+% grade zirconyl chloride had Ag, Al, As, Cd, Cu, Hf, Mg, Na, Sc and V at 20, 1.8, 0.6, 0.6, 0.4, 8.4, 0.4, 2.4, 80 and 3 ppm, respectively. (See above.) METAL-ORGANIC COMPOUNDS This section contains metal-organic compounds as well as ammonium and metal salts of organic acids. (For Introduction see p 445.)
Check Digit Verification of cas no
The CAS Registry Mumber 13520-92-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,5,2 and 0 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 13520-92:
(7*1)+(6*3)+(5*5)+(4*2)+(3*0)+(2*9)+(1*2)=78
78 % 10 = 8
So 13520-92-8 is a valid CAS Registry Number.
InChI:InChI=1/2ClH.8H2O.O.Zr/h2*1H;8*1H2;;/q;;;;;;;;;;;+2/p-2/rCl2OZr.8H2O/c1-4(2)3;;;;;;;;/h;8*1H2
13520-92-8Relevant articles and documents
Aqueous solution chemistry of zirconium(IV). 1. Kinetic studies on hydrogen ion and general acid (HX) induced dissociations of the tetrameric ion [Zr4(OH)8(H2O)16]8+
Devia,Sykes, A. Geoffrey
, p. 910 - 913 (2008/10/08)
The tetramer to monomer conversion [Zr4(OH)8(H2O)16]8+ → Zr(H2O)84+, i.e., Zr4 → Zr, was initiated by diluting aqueous solutions of Zr(IV) (ca. 10-2 M) in HClO4 (ca. 0.5 M) to [Zr(IV)] ≤ 10-4 M and increasing [H+] to a value in the range 2.0-4.0 M (I = 4.0 M (NaClO4)). Reactions were carried out in the presence of 2-thenoyltrifluoroacetone (HT), which complexes rapidly with Zr4+ (but not Zr4) and, since ZrT3+ is colored (λmax 366 nm), provides the means of monitoring the reaction. Data conform to the simple rate law kH[H+][Zr4], where at 25°C kH = 3.7 × 10-3 M-1 s-1. At I = 2.0 M (NaClO4), kH (25°C) = 0.95 × 10-3 s-1, and from the temperature-dependence activation parameters ΔH? = 13.2 kcal mol-1 and ΔS? = -28 cal K-1 mol-1 were obtained. Acids HX also induce the Zr4 → Zr conversion, giving the rate law KH[H+][Zr4] + kHX[HX][Zr4]. Second-order rate constants kHX (M-1 s-1) at 25°C, [H+] = 2.0 M, and I = 2.0 M are as follows: H3PO4 (80) > H2C2O4 (44) > H4P2O7 (40) > HF (30) > HSO4- (8.8) > CCl3CO2H (1.0) > CH2ClCO2H (0.4). Acetic acid (5 × 10-3 M), Cl- (2 M), and NCS- (1.2 × 10-3 M) have no effect on the conversion.
