Sodium fluorosilicate
| Names | |
|---|---|
| Preferred IUPAC name
Sodium fluorosilicate | |
| Systematic IUPAC name
Sodium hexafluoridosilicate(2–)
[1] | |
| Other names
Disodium hexafluorosilicate/sodium fluosilicate/sodium silicofluoride
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.037.198 |
| EC Number |
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PubChem CID
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| RTECS number |
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| UN number | 2674 |
CompTox Dashboard (EPA)
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| Properties | |
| Na2[SiF6] | |
| Appearance | white granular powder |
| Odor | odorless |
| Density | 2.7 g/cm3 |
| 0.64 g/100 mL (20 °C) 1.27 g/100 mL (50 °C) 2.45 g/100 mL (100 °C) | |
| Solubility | insoluble in alcohol |
Refractive index (nD)
|
1.312 |
| Structure | |
| hexagonal | |
| Hazards | |
| NFPA 704 (fire diamond) | |
| Lethal dose or concentration (LD, LC): | |
LDLo (lowest published)
|
70 mg/kg (mouse, oral) 125 mg/kg (rabbit, oral)[2] |
| Related compounds | |
Other cations
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Ammonium hexafluorosilicate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sodium fluorosilicate is a compound with the chemical formula Na2[SiF6].
Manufacturing
Sodium fluorosilicate is made by neutralizing fluorosilicic acid with sodium chloride or sodium sulfate.
Possible Application
It is used in some countries as additives for water fluoridation, opal glass raw material, ore refining, or other fluoride chemical (like sodium fluoride, magnesium silicofluoride, cryolite, aluminum fluoride) production.[3]
See also
References
- ^ "Parent Hydride Names and Substitutive Nomenclature". Nomenclature of Inorganic Chemistry, IUPAC Recommendations 2005 (PDF). RSC Publishing. 2005. pp. 114–135.
- ^ "Fluorides (as F)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
- ^ http://www.pub.gov.sg/general/pages/watertreatment.aspx