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402931

Sigma-Aldrich

Potassium fluoride

ACS reagent, ≥99.0%

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Linear Formula:
KF
CAS Number:
7789-23-3
Molecular Weight:
58.10
Beilstein:
3902818
EC Number:
232-151-5
MDL number:
MFCD00011398
UNSPSC Code:
12352300
PubChem Substance ID:
329755971
NACRES:
NA.21

grade

ACS reagent

Quality Level

200

vapor pressure

1.3 hPa ( 885 °C)

Assay

≥99.0%

form

crystalline powder
powder, crystals or chunks

impurities

≤0.01 meq/g Titr. base
≤0.03 meq/g Titr. acid
≤0.1% K2SiF6

pH

8-9 (20 °C, 50 g/L)

mp

858 °C (lit.)

anion traces

chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.005%

cation traces

Fe: ≤0.001%
Na: ≤0.2%
heavy metals: ≤0.001% (by ICP)

SMILES string

[F-].[K+]

InChI

1S/FH.K/h1H;/q;+1/p-1

InChI key

NROKBHXJSPEDAR-UHFFFAOYSA-M

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Application

A versatile fluoride ion source used in a study of ion-specific swelling and de-swelling of ampholytic polymer gels, in the room temperature oxidation of noble metals in HF, and in the measurement of electronic polarizabilities of ions in polymers of alkali halides.

Pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

Signal Word

Danger

Hazard Statements

H301 + H311 + H331,H318

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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Yingying Li et al.
Frontiers in chemistry, 8, 832-832 (2020-11-12)
The rare-earth nanocrystals containing Er3+ emitters offer very promising tools for imaging applications, as they can not only exhibit up-conversion luminescence but also down-conversion luminescence in the second near-infrared window (NIR II). Doping non-lanthanide cations into host matrix was demonstrated

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