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20990

Sigma-Aldrich

Cesium fluoride

purum p.a., ≥98.0%

Synonym(s):

NSC 84270

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About This Item

Empirical Formula (Hill Notation):
CsF
CAS Number:
Molecular Weight:
151.90
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.22

grade

purum p.a.

Assay

≥98.0%

mp

682 °C (lit.)

density

4.115 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤1000 mg/kg
sulfate (SO42-): ≤500 mg/kg

cation traces

Ca: ≤50 mg/kg
Cd: ≤50 mg/kg
Co: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤50 mg/kg
K: ≤300 mg/kg
Na: ≤100 mg/kg
Ni: ≤50 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

SMILES string

[F-].[Cs+]

InChI

1S/Cs.FH/h;1H/q+1;/p-1

InChI key

XJHCXCQVJFPJIK-UHFFFAOYSA-M

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Application

Reactant for:
  • Preparation of building blocks for synthesis of fluoroallylic compounds
  • Synthesis of alcohols via hydrolysis of alkyl silyl ethers at neutral pH in buffered mixed organic-aqueous solutions
  • Nucleophilic fluorination of alkynyliodonium salts to form fluorovinylic compounds
  • Nucleophilic aromatic substitution (SNAr) reactions
Used in the successful synthesis of a single-crystal Dion-Jacobson phase, CsLaTa2O7, that has applications in photocatalysis and superconductivity.

Other Notes

Catalyst for the reaction of silyl enol ethers with carbonyl compounds

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Repr. 2 - STOT RE 2

Target Organs

Kidney,Adrenal gland

Supplementary Hazards

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Journal of the Chemical Society. Chemical Communications, 122-122 (1981)
J. Boyer et al.
Journal of Organometallic Chemistry, 184, 157-157 (1980)
E D Risby et al.
Archives of general psychiatry, 48(6), 513-524 (1991-06-01)
As part of a study of the effects of lithium carbonate on neurochemical function in man, platelet and lymphocyte adenylate cyclase activity and lymphocyte beta-adrenergic receptor binding characteristics were determined before and after 2 weeks of lithium treatment in 10
E A Lesnik et al.
Journal of biomolecular structure & dynamics, 5(3), 601-614 (1987-12-01)
We have determined the 1H----3H exchange rate constants between water and C8H groups of purinic residues of alternating polynucleotides poly(dA-dT).poly(dA-dT), poly(dG-dC).poly(dG-dC) and poly(dA-dC).poly(dG-dT) as well as homopolynucleotides poly(dA).poly(dT) and poly(dG).poly(dC) in aqueous solutions with high-salt concentrations (3 M NaCl and
L Bertollini et al.
Neuroreport, 5(5), 553-556 (1994-01-31)
The effect of intracellular fluoride ions on voltage-dependent calcium currents was tested during whole-cell voltage-clamp recordings in thalamic neurones acutely dissociated from young adult rats. It is demonstrated that 5-30 mM intracellular fluoride selectively and reversibly suppresses the high voltage-activated

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