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Merck
CN

60322

Potassium hexafluorosilicate

≥99.0% (T)

Synonym(s):

Dipotassium hexafluorosilicate, Potassium fluorosilicate, Potassium fluosilicate, Potassium silicofluoride

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About This Item

Linear Formula:
K2SiF6
CAS Number:
16871-90-2
Molecular Weight:
220.27
NACRES:
NA.21
PubChem Substance ID:
329758873
UNSPSC Code:
12352200
EC Number:
240-896-2
MDL number:
MFCD00040666
Assay:
≥99.0% (T)
Form:
solid

Key Documents

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Product Name

Potassium hexafluorosilicate, ≥99.0% (T)

InChI key

UUHPPUWEDCVPCO-UHFFFAOYSA-N

InChI

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

SMILES string

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

assay

≥99.0% (T)

form

solid

density

2.665 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤500 mg/kg
sulfate (SO42-): ≤200 mg/kg

cation traces

Ca: ≤50 mg/kg
Cd: ≤50 mg/kg
Co: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤100 mg/kg
Na: ≤1000 mg/kg
Ni: ≤50 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

Quality Level

100

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Disclaimer

may contain black particles

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
BCCN5952
BCCK5200
BCCK5199
BCCD1243
BCBX2257

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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
Ram Thaimattam et al.
Acta crystallographica. Section B, Structural science, 64(Pt 4), 483-490 (2008-07-22)
The co-crystal structure of N-methylpiperidine betaine with N-methylpiperidine betaine hexafluorosilicate represents an unusual case of a salt co-crystal with a high Z' value (3), unexpected conformational variability, and with nearly 50% of its contents disordered. The betaine units from the
A Kawasaki et al.
Journal of materials science. Materials in medicine, 16(5), 461-466 (2005-05-06)
Although diamine silver fluoride (AgF: (NH3)2AgF) stains teeth black, it is known as a very effective agent to prevent the dental caries progress. In order to find another fluoride that has a similar anticariogenic effect without changing tooth color, we
C Shen et al.
Journal of dentistry, 35(4), 275-281 (2006-11-23)
This study tested the hypothesis that the oxygen-inhibited layer on a light-cured methacrylate based resin and the pH of the storage medium would increase significantly the initial fluoride release and long-term release rate from fluoride dental sealant. Forty-eight discs (16-mm
J Krzystek et al.
Journal of magnetic resonance (San Diego, Calif. : 1997), 213(1), 158-165 (2011-10-22)
The complex [Fe(H2O)6]SiF6 is one of the most stable and best characterized high-spin Fe(II) salts and as such, is a paradigm for the study of this important transition metal ion. We describe high-frequency and -field electron paramagnetic resonance studies of
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