Chemical Property of Hexafluorosilicon(2-);hydron
Chemical Property:
- Appearance/Colour:colourless liquid
- Vapor Pressure:23hPa at 19.85℃
- Refractive Index:1.3500
- Boiling Point:108-109 °C
- PKA:1.83[at 20 ℃]
- Flash Point:108-109°C
- PSA：0.00000
- Density:1.22 g/mL at 25 °C
- LogP:2.36540
- Storage Temp.:−20°C
- Solubility.:H2O: 1 mg/mL, clear, colorless
- Water Solubility.:Miscible with water.
- Hydrogen Bond Donor Count:1
- Hydrogen Bond Acceptor Count:7
- Rotatable Bond Count:0
- Exact Mass:142.97517054
- Heavy Atom Count:7
- Complexity:62.7
- Purity/Quality:
-
99% *data from raw suppliers
Adrenocorticotropic Hormone, Human *data from reagent suppliers
Safty Information:
- Pictogram(s):
C
- Hazard Codes:C
- Statements:
34-35-20/21/22
- Safety Statements:
26-36/37/39-45-27
- MSDS Files:
-
SDS file from LookChem
Total 1 MSDS from other Authors
Useful:
- Canonical SMILES:[H+].F[Si-2](F)(F)(F)(F)F
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Description
Hexafluorosilicic acid is a kind of inorganic acid. It is majorly used for the fluoridation of water in United State to minimize the incidence of dental caries and dental fluorosis. For chemical synthesis, it is majorly used for the manufacturing of aluminum fluoride and cryolite as well as many kinds of hexafluorosilicate salts. It can also be used for the production of silicon and silicon dioxide. It can also be used as an electrolyte in the Betts electrolytic process for refining lead. It is also a specialized reagent in organic synthesis for cleaving Si–O bonds of silyl ethers.
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Physical properties
d 1.220 g cm?3 for a 25% aq solution.
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Uses
A fluoride source with both protic and Lewis acid properties providing efficient cleavage of silicon–oxygen bonds, e.g. silyl ether
deprotection. Hexafluorosilicic acid is commonly used as a source of fluoride. It is converted to a variety of useful hexafluorosilicate salts. It is also used as an electrolyte in the Betts electrolytic process for refining lead. It is an important organic reagent for cleaving Si-O bonds of silyl ethers. Further, it is used as wood a preservation agent and also used in surface modification of calcium carbonate. A 1-2% solution is used widely for sterilizing equipment in brewing and bottling establishments. Other concentrations are used in the electrolytic refining of lead, in electroplating, for hardening cement, crumbling lime or brick work, for the removal of lime from hides during the tanning process, to remove molds, as preservative for timber.
