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250171

Sigma-Aldrich

Sodium hexafluorosilicate

Synonyme(s) :

Disodium hexafluorosilicon(2-), Sodium fluosilicate

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About This Item

Formule linéaire :
Na2SiF6
Numéro CAS:
16893-85-9
Poids moléculaire :
188.06
Numéro CE :
240-934-8
Numéro MDL:
MFCD00003491
Code UNSPSC :
12352302
ID de substance PubChem :
24855039
Nomenclature NACRES :
NA.23

Forme

powder

Niveau de qualité

200

Densité

2.68 g/mL at 25 °C (lit.)

Chaîne SMILES 

[Na+].[Na+].F[Si--](F)(F)(F)(F)F

InChI

1S/F6Si.2Na/c1-7(2,3,4,5)6;;/q-2;2*+1

Clé InChI

TWGUZEUZLCYTCG-UHFFFAOYSA-N

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Pictogrammes

Skull and crossbones
GHS06

Mention d'avertissement

Danger

Mentions de danger

H301 + H311 + H331

Classification des risques

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral

Code de la classe de stockage

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

Classe de danger pour l'eau (WGK)

WGK 2

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

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Certificats d'analyse (COA)

Lot/Batch Number
MKCQ4303
MKCP4296
MKCN2618
MKCK2607
MKBZ9221V

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L C Chow et al.
Caries research, 36(2), 136-141 (2002-05-31)
A previous study showed that a sodium hexafluorosilicate-calcium chloride-based two-solution fluoride (F) rinse containing 6 mmol/l of F was more effective than a 12 mmol/l F sodium fluoride rinse in depositing F on tooth surfaces and increasing oral F levels.
Ali Ouasri et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 59(4), 851-857 (2003-03-01)
The X-ray powder diffraction pattern of [(CH(3))(3)NH](2)SiF(6) was obtained and indexed on the basis of a centred cubic unit cell with the P4(1)32 as the likely space group. The Infrared and Raman spectra of this compound have been recorded at
P S Lakshminarayanan et al.
Inorganic chemistry, 45(11), 4372-4380 (2006-05-23)
Synthesis and crystal structure of a tren-based amide, L(1), N,N',N''-tris[(2-amino-ethyl)-3-nitro-benzamide] is reported. The crystallographic results show intramolecular hydrogen bonding and aromatic pi...pi stacking among tripodal arms which prevent opening of the receptor cavity. Intermolecular hydrogen bonding in L1 generates the
Je Seon Song et al.
Anticancer research, 25(1A), 391-395 (2005-04-09)
Fluorine compounds are widely used for the prevention of caries, and recently sodium fluorosilicate has been used in water fluorination. The cytotoxic effects of sodium fluorosilicate in several osteosarcoma and oral cancer cells were evaluated in this study by measurement
Shingo Shibata et al.
American journal of dentistry, 24(3), 148-152 (2011-08-31)
To evaluate the degree of penetration of an ammonium hexafluorosilicate [SiF: (NH4)2SiF6] solution containing various antibacterial agents into dentin and the depth of dentin tubule occlusion by the precipitate. Various antibacterial SiF solutions were prepared with the addition to chlorhexidine
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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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