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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
EC Number:
240-896-2
MDL number:
MFCD00040666
UNSPSC Code:
12000000
PubChem Substance ID:
329758873
NACRES:
NA.21

Quality Level

100

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

SMILES string

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

InChI

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

InChI key

UUHPPUWEDCVPCO-UHFFFAOYSA-N

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Caution

may contain black particles

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301 + H311 + H331

Hazard Classifications

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

Storage Class Code

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCK5200
BCCK5199
BCCD1243
BCBX2257
BCBW1397

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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
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
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
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
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
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