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60238

Sigma-Aldrich

Potassium fluoride

BioUltra, ≥99.5% (F)

Synonym(s):

KF

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About This Item

Linear Formula:
KF
CAS Number:
7789-23-3
Molecular Weight:
58.10
Beilstein/REAXYS Number:
3902818
MDL number:
MFCD00011398
UNSPSC Code:
12352302
PubChem Substance ID:
57651737
NACRES:
NA.25
assay:
≥99.5% (F)
grade:
reagent grade
form:
solid
solubility:
H2O: 1 M at 20 °C, clear, colorless
Pricing and availability is not currently available.

grade

reagent grade

Quality Level

200

product line

BioUltra

assay

≥99.5% (F)

form

solid

impurities

insoluble matter, passes filter test
≤0.01% free acid (as HF)
≤0.01% free alkali (as KOH)
≤0.1% potassium fluoro silicate (K2SiF6)

pH

7.0-8.5 (25 °C, 1 M in H2O)

mp

858 °C (lit.)

solubility

H2O: 1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤100 mg/kg

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60239602401.93627
Potassium fluoride BioUltra, ≥99.5% (F)

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Potassium fluoride

Potassium fluoride puriss. p.a., ≥99.0% (F)

60239

Potassium fluoride

Potassium fluoride purum p.a., ≥99.0% (F)

60240

Potassium fluoride

Potassium fluoride EMPLURA®

1.93627

Potassium fluoride

form

solid

form

powder or crystals

form

powder or crystals

form

-

assay

≥99.5% (F)

assay

≥99.0% (F)

assay

≥99.0% (F)

assay

-

solubility

H2O: 1 M at 20 °C, clear, colorless

solubility

-

solubility

-

solubility

-

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

-

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤100 mg/kg

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤100 mg/kg

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤1000 mg/kg

anion traces

-

impurities

insoluble matter, passes filter test, ≤0.01% free alkali (as KOH), ≤0.01% free acid (as HF), ≤0.1% potassium fluoro silicate (K2SiF6)

impurities

≤0.01% free acid (as HF), ≤0.01% free alkali (as KOH), ≤0.1% potassium fluoro silicate (K2SiF6)

impurities

-

impurities

-

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.
Potassium fluoride may be used in thermodynamic analysis of DNA-ligand binding and studies on the structural stability of proteins and peptides.

Other Notes

Inhibitor of pyrophosphatase, hence prevents loss of ATP by hydrolytic cleavage of the pyrophosphate bond in the assay of amidophosphoribosyltransferase[1]; Strongly inhibits polypeptide chain initiation in the reticulocyte lysate cell-free system[2]

pictograms

CorrosionSkull and crossbones
GHS05,GHS06

signalword

Danger

Hazard Classifications

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

Storage Class

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

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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    Certificates of Analysis (COA)

    Lot/Batch Number
    BCCG4451
    BCCF5011
    BCCD4909
    BCCC9122
    BCCC3922

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    J C O'Rourke et al.
    The Journal of biological chemistry, 250(9), 3443-3450 (1975-05-20)
    KF (30 mM) strongly inhibits polypeptide chain initiation in the reticulocyte lysate cell-free system.. Chain elongation is partially inhibited but proceeds to a significant extent with little initiation of new chains. Polysome breakdown is incomplete after incubations as long as
    Amidophosphoribosyltransferase (chicken liver).
    J M Lewis et al.
    Methods in enzymology, 51, 171-178 (1978-01-01)
    Mingming Fan et al.
    Bioresource technology, 104, 447-450 (2011-12-16)
    Transesterification of soybean oil with methanol was carried out in the presence of CaO-MgO and KF-modified CaO-MgO catalysts at atmospheric pressure. While the methyl ester yield for the CaO-MgO catalyst with a ratio of 8:2 (CaO:MgO) was 63.6%, it was
    E Gershonov et al.
    The Journal of organic chemistry, 74(1), 329-338 (2008-12-05)
    A facile solvent-free hydrolysis (chemical destruction) of the warfare agents VX (O-ethyl S-2-(diisopropylamino)ethyl methylphosphonothioate), GB (O-isopropyl methylphosphonofluoridate or sarin), and HD (2,2'-dichloroethyl sulfide or sulfur mustard) upon reaction with various solid-supported fluoride reagents is described. These solid reagents include different
    Lirong Wen et al.
    Journal of combinatorial chemistry, 11(5), 799-805 (2009-07-28)
    A series of new functionalized thiochromeno[2,3-b]pyridine derivatives have been synthesized via a sequence of Knoevenagel condensation, Michael addition, cyclization, and intramolecular nucleophilic substitution, which is first catalyzed by KF/neutral Al(2)O(3) cooperated with PEG 6000 under microwave irradiation. Experimental results indicated
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