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372579

Sigma-Aldrich

Ammonium hexafluorosilicate

98%

Synonym(s):

Cryptohalite

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About This Item

Linear Formula:
(NH4)2SiF6
CAS Number:
16919-19-0
Molecular Weight:
178.15
EC Number:
240-968-3
MDL number:
MFCD00010887
UNSPSC Code:
12352302
eCl@ss:
38130311
PubChem Substance ID:
24863149
NACRES:
NA.23

Assay

98%

form

solid

density

2.01 g/mL at 25 °C (lit.)

SMILES string

[H][N+]([H])([H])[H].[H][N+]([H])([H])[H].F[Si--](F)(F)(F)(F)F

InChI

1S/F6Si.2H3N/c1-7(2,3,4,5)6;;/h;2*1H3/q-2;;/p+2

InChI key

ITHIMUMYFVCXSL-UHFFFAOYSA-P

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Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301 + H311 + H331,H412

Hazard Classifications

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

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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
[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)]
Mark A Brzezinski et al.
Analytical chemistry, 78(17), 6109-6114 (2006-09-02)
A procedure for the automated determination of isotopic abundances of silicon from biogenic and lithogenic particulate matter and from dissolved silicon in fresh or saltwaters is reported. Samples are purified using proven procedures through the reaction of Si with acidified
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