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01132 Sigma-Aldrich

Potassium fluoride

purified, ≥99%

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Properties

Related Categories Chemical Synthesis, Deprotecting Reagents, Essential Chemicals, Fluoride Sources, Potassium Salts,
InChI Key   NROKBHXJSPEDAR-UHFFFAOYSA-M
assay   ≥99%
quality   purified
loss   ≤0.5% loss on ignition, 500 °C, 2 h
mp   858 °C (lit.)
anion traces   chloride (Cl-): ≤100 mg/kg
  sulfate (SO42-): ≤500 mg/kg
cation traces   Fe: ≤50 mg/kg

Description

General description

Potassium fluoride (KF) on activated alumina is a highly reactive catalyst (basic in nature) for various organic reactions. High reactivity is due to the formation of potassium hexafluoroaluminiate, potassium hydroxide and potassium aluminate on the interaction of its fluoride ion with alumina. Celite coated with potassium fluoride is an economical reagent for hydrogen-bond-assisted reactions. Potassium fluoride on basic alumina in acetonitrile with ultrasound has been employed for the deprotection of tert-butyldimethylsilyl ethers of phenols.

Application

Potassium fluoride may be employed for doping the natural calcium phosphate (NP) for high yield synthesis of activated alkenes.

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.

Safety & Documentation

Safety Information

Symbol 
GHS06  GHS06
Signal word 
Danger
Hazard statements 
RIDADR 
UN 1812 6.1 / PGIII
WGK Germany 
1

Documents

Certificate of Analysis (COA)

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