| 词条 | Sodium fluorosilicate |
| 释义 |
| PIN = Sodium fluorosilicate | SystematicName = Sodium hexafluoridosilicate(2–)[1] | OtherNames = Disodium hexafluorosilicate/sodium fluosilicate/sodium silicofluoride | ImageFile = Natriumhexafluorosilicat.png | ImageSize = 250px | ImageAlt = Unit cell of the compound | ImageCaption = Unit cell of soidum hexafluoridosilicate |Section1={{Chembox Identifiers | CASNo = 16893-85-9 | CASNo_Ref = {{cascite|correct|CAS}} | PubChem = 28127 | ChemSpiderID = 26165 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | EINECS = 240-934-8 | UNNumber = 2674 | RTECS = VV8410000 | SMILES = [Na+].[Na+].F[Si--](F)(F)(F)(F)F | StdInChI = 1S/F6Si.2Na/c1-7(2,3,4,5)6;;/q-2;2*+1 | StdInChIKey = TWGUZEUZLCYTCG-UHFFFAOYSA-N}} |Section2={{Chembox Properties | Formula= Na2[SiF6] | MolarMass = 188 g/mol | Appearance = white granular powder | Odor = odorless | Density = 2.7 g/cm3 | Solubility = 0.64 g/100 mL (20 °C) 1.27 g/100 mL (50 °C) 2.45 g/100 mL (100 °C) | SolubleOther = insoluble in alcohol | RefractIndex = 1.312 }} | Section3 = {{Chembox Structure | Structure_ref = [2] | CrystalStruct = trigonal | SpaceGroup = P321 | LattConst_a = 8.859 | LattConst_c = 5.038 | UnitCellFormulas = 3 |Section4={{Chembox Hazards | NFPA-H = 2 | NFPA-F = 0 | NFPA-R = 0 | LDLo = 70 mg/kg (mouse, oral) 125 mg/kg (rabbit, oral)[3] }} |Section7={{Chembox Related | OtherCations = Ammonium hexafluorosilicate Fluorosilicic acid}} }} Sodium fluorosilicate is a compound with the chemical formula Na2[SiF6]. ManufacturingSodium fluorosilicate is made by neutralizing fluorosilicic acid with sodium chloride or sodium sulfate. Possible ApplicationIt 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.[4] See also
References1. ^{{Cite manual|section = Parent Hydride Names and Substitutive Nomenclature|url = http://old.iupac.org/publications/books/rbook/Red_Book_2005.pdf|format = PDF|title = Nomenclature of Inorganic Chemistry, IUPAC Recommendations 2005|publisher = RSC Publishing|year = 2005|pages = 114–135}} {{sodium compounds}}{{Fluorine compounds}}{{silicon compounds}}2. ^{{cite journal|author=Allan Zalkin, J. D. Forrester, David H. Templeton|year=1964|volume=17|pages=1408–1412|doi=10.1107/S0365110X64003516|doi-access=free|journal=Acta Crystallographica|title=The Crystal Structure of Sodium Fluorosilicate}} 3. ^{{IDLH|fluoride|Fluorides (as F)}} 4. ^{{cite web |url=http://www.pub.gov.sg/general/pages/watertreatment.aspx |title=Archived copy |accessdate=2009-08-10 |deadurl=yes |archiveurl=https://web.archive.org/web/20090326084915/http://www.pub.gov.sg/GENERAL/Pages/WaterTreatment.aspx |archivedate=2009-03-26 |df= }} 2 : Sodium compounds|Hexafluorosilicates |
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