From Wikipedia, the free encyclopedia
Potassium hexafluorozirconate
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Names
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Other names
dipotassium hexafluorozirconate, potassium zirconium hexafluoride, potassium fluorozirconate
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Identifiers
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ChemSpider
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ECHA InfoCard
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100.037.244
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EC Number
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InChI=1S/6FH.2K.Zr/h6*1H;;;/q;;;;;;2*+1;+4/p-6 Key: BJZIJOLEWHWTJO-UHFFFAOYSA-H
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F[Zr-2](F)(F)(F)(F)F.[K+].[K+]
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Properties
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F6K2Zr
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Molar mass
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283.411 g·mol−1
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Appearance
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white crystaline powder
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Density
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3.48 g/cm3
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soluble
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Hazards
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GHS labelling:
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Danger
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H301,
H315,
H319,
H335
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P301,
P302,
P305,
P310,
P330,
P351,
P352
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Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Potassium hexafluorozirconate is an
inorganic compound of
potassium,
fluorine, and
zirconium with the chemical formula K2ZrF6.
[1]
[2]
[3]
Preparation
Potassium hexafluorozirconate can be prepared from precipitation from solutions:
- 2KF + ZrF4 → K2ZrF6↓
- 2KCl +
(NH4)2ZrF6 → K2ZrF6↓ + 2NH4Cl
Also, in industry, it is obtained by sintering zirconium ore concentrates with K2SiF6 at 600–700 °C.
[4]
Physical properties
Potassium hexafluorozirconate forms an odorless white crystalline powder.
It crystallizes in the monoclinic space group C 2/c (space group No. 15).
[5]
Uses
Potassium hexafluorozirconate is used as an intermediate product in the electrolytic production of metallic zirconium.
It is also used as a
flame retardant for wool,
[6] grain refining agent in magnesium and aluminum alloys, welding flux, and optical glass component.
[7]
References
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^
"Potassium Hexafluorozirconate".
American Elements. Retrieved 26 February 2024.
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^
"Potassium hexafluorozirconate".
Sigma Aldrich. Retrieved 26 February 2024.
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^
"Potassium Hexafluorozirconate Powder (CAS 16923-95-8)". Stanford Advanced Materials. Retrieved 26 February 2024.
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^ Lewis, Alison; Olsen, Christine (2007).
BIWIC 2007: 14th International Workshop on Industrial Crystallization : September 9th-11th, 2007, University of Cape Town, Cape Town, South Africa.
IOS Press. p. 186.
ISBN
978-1-58603-790-1. Retrieved 26 February 2024.
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^ Hoppe, R.; Mehlhorn, B. (September 1976).
"Die Kristallstruktur von K 2 ZrF 6".
Zeitschrift für anorganische und allgemeine Chemie. 425 (3): 200–208.
doi:
10.1002/zaac.19764250303. Retrieved 26 February 2024.
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^ Lewis, David M.; Rippon, John A. (20 May 2013).
The Coloration of Wool and Other Keratin Fibres.
John Wiley & Sons. p. 115.
ISBN
978-1-118-62509-5. Retrieved 26 February 2024.
-
^
"Potassium hexafluorozirconate | CAS 16923-95-8 | Connect Chemicals". connectchemicals.com. Retrieved 26 February 2024.
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H, (pseudo)halogens | |
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chalcogens | |
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pnictogens | |
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B, C group | |
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trans metals | |
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organic | |
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PF6−, AsF6−, SbF6− compounds | |
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AlF6− compounds | |
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chlorides, bromides, iodides and pseudohalogenides | |
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SiF62-, GeF62- compounds | |
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Oxyfluorides | |
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Organofluorides | |
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with transition metal, lanthanide, actinide, ammonium | |
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nitric acids | |
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bifluorides | |
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thionyl, phosphoryl, and iodosyl | |
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