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Merck
CN

250171

Sodium hexafluorosilicate

Synonym(s):

Disodium hexafluorosilicon(2-), Sodium fluosilicate

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About This Item

Linear Formula:
Na2SiF6
CAS Number:
16893-85-9
Molecular Weight:
188.06
NACRES:
NA.23
PubChem Substance ID:
24855039
UNSPSC Code:
12352302
EC Number:
240-934-8
MDL number:
MFCD00003491
Form:
powder

Key Documents

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InChI key

TWGUZEUZLCYTCG-UHFFFAOYSA-N

InChI

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

SMILES string

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

form

powder

density

2.68 g/mL at 25 °C (lit.)

Quality Level

200

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pictograms

Skull and crossbones
GHS06

signalword

Danger

Hazard Classifications

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

Storage Class

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

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
MKCQ4303
MKCP4296
MKCN2618
MKCK2607
MKBZ9221V

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S Nakabo et al.
Journal of oral rehabilitation, 29(7), 675-681 (2002-08-03)
Regulation of fluoride release from restorative resin or sealant is beneficial to patients as it will prevent the occurrence of the secondary caries. In this study, we evaluated whether or not the formation of a hydrophobic polysiloxane layer on the
Teresa Lech
Forensic science international, 206(1-3), e20-e24 (2010-07-27)
Fluoride, of all inorganic substances, is among the least likely to be identified by a routine toxicological analysis. Acute poisonings with salts of hydrofluoric or fluorosilicic acid, however, although relatively uncommon, may occur. Some fluorosilicates, salts of fluorosilicic acid (e.g.
[Recurrent ventricular fibrillation in magnesium fluosilicate poisoning].
B Suberviola Cañas et al.
Medicina intensiva, 31(6), 344-346 (2007-08-01)
Toshiyuki Suge et al.
American journal of dentistry, 19(4), 248-252 (2006-08-31)
To evaluate the occluding ability of ammonium hexafluorosilicate (SiF). Dentin disks prepared from human extracted teeth were grouped as follows to prepare different situations of dentin hypersensitivity: (1) those sonicated for 20 minutes; (2) those treated with 0.5 mol/L EDTA
Toshiyuki Suge et al.
Dental materials : official publication of the Academy of Dental Materials, 24(2), 192-198 (2007-06-05)
Diamine silver fluoride [AgF: (NH(3))(2)AgF] has been used clinically in Japan, as it reduces dental caries and dentin hypersensitivity. However, AgF stains the teeth black due to silver precipitation. To overcome this drawback, the authors prepared ammonium hexafluorosilicate [SiF: (NH(4))(2)SiF(6)]
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