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Safety Information

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

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

Regulatory Information

危险化学品

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Certificates of Analysis (COA)

Lot/Batch Number
MKCP4403
MKCF3256
MKBZ0480V
MKBK9147V
MKBK1462V

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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
[Recurrent ventricular fibrillation in magnesium fluosilicate poisoning].
B Suberviola Cañas et al.
Medicina intensiva, 31(6), 344-346 (2007-08-01)
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
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)]
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.
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