Sodium hexafluorosilicate

Base Information

• Chemical Name: Sodium hexafluorosilicate
• CAS No.: 16893-85-9
• Deprecated CAS: 12656-12-1,1310-02-7,1344-04-3,221174-64-7,39413-34-8,1202391-51-2,1360896-72-5,2041645-24-1,2085706-50-7,2108687-60-9,2192184-31-7,2226012-27-5,2293042-88-1,2416265-41-1,2600319-46-6,2639889-46-4,1202391-51-2,1310-02-7,1344-04-3,221174-64-7,39413-34-8
• Molecular Formula: F6Na2Si
• Molecular Weight: 188.06
• Hs Code.: 2826.20
• European Community (EC) Number: 240-934-8
• ICSC Number: 1243
• UN Number: 2674
• UNII: 806AV2E065
• DSSTox Substance ID: DTXSID9036933
• Wikipedia: Sodium fluorosilicate,Sodium_fluorosilicate
• Wikidata: Q532908
• Mol file: 16893-85-9.mol

Synonyms:ammonium hexafluorosilicate;cesium hexafluosilicate;hexafluorosilicate;hexafluorosilicate (2-);hexafluorosilicate, ammonium salt;hexafluorosilicate, barium salt;hexafluorosilicate, calcium salt;hexafluorosilicate, magnesium salt;hexafluorosilicate, magnesium salt, hydrate;hexafluorosilicate, potassium salt;hexafluorosilicate, sodium salt;magnesium fluorosilicate;magnesium hexafluorosilicate;Na(2)SiF(6);sodium fluorosilicate;sodium fluosilicate;sodium hexafluorosilicate

Chemical Property of Sodium hexafluorosilicate

Chemical Property:

• Appearance/Colour: white crystalline powder
• Vapor Pressure: 0.01Pa
• Melting Point: melts at red heat, decomposing [MER06]
• Refractive Index: 1.310
• Boiling Point: 620℃[at 101 325 Pa]
• PSA: 0.00000
• Density: 2.68 g/mL at 25 °C(lit.)
• LogP: 2.14040
• Water Solubility.: Slightly soluble in water. Solubility increases with temperature. Insoluble in alcoholSlightly soluble in water. Insoluble in
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 7
• Rotatable Bond Count: 0
• Exact Mass: 187.94688407
• Heavy Atom Count: 9
• Complexity: 62.7
• Transport DOT Label: Poison

Purity/Quality:

99% ^*data from raw suppliers

Sodium hexafluorosilicate 98% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): T,Xi
• Hazard Codes: T,Xi
• Statements: 23/24/25
• Safety Statements: 26-45

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Metals, Inorganic Compounds
• Canonical SMILES: F[Si-2](F)(F)(F)(F)F.[Na+].[Na+]
• Inhalation Risk: A harmful concentration of airborne particles can be reached quickly when dispersed.
• Effects of Short Term Exposure: The substance may cause effects on the blood and calcium metabolism. This may result in cardiac disorders. Medical observation is indicated.
• Effects of Long Term Exposure: The substance may have effects on the bones and teeth. This may result in fluorosis.
• Production method: Calcium superphosphate byproduct method: use sulfuric acid and ground phosphate rock for production of superphosphate or fluorine-containing waste gas during extraction of phosphate with water absorbing silicon tetrafluoride to make it into fluorosilicate. When the concentration of fluorine acid solution reaches 8% to 10%, stand static for clarification and remove the impurities with the clarified fluorine silicate solution being added of sodium chloride (being excess of about 25%) for reaction of sodium fluorosilicate. Further go through centrifugation isolation, washing, air drying at a temperature below 300 ℃ and then pulverize to obtain the finished product of sodium fluorosilicate. H2SiF6 + 2NaCl → Na2SiF6 + 2HCl
• Uses: Sodium hexafluorosilicate is used as a additive for water fluoridation, opal glass raw material and in ore refining. It is also used in the preparation of other fluoride chemicals like sodium fluoride, sodium hexafluoroaluminate, potassium hexafluorosilicate, ammonium fluoride and calcium fluoride. It finds application as flotator, component for wet etching, wood preservative, brazing flux and welding compound. It is an active component of concrete. In enamels for china and porcelain; manufacture of opal glass; as insecticide, rodenticide; mothproofing of woolens. Fluoridating agent for drinking water. Intermediate in production of synthetic cryolite.