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289345

Sigma-Aldrich

Cesium fluoride

99.9% trace metals basis

Synonym(s):

NSC 84270

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About This Item

Empirical Formula (Hill Notation):
CsF
CAS Number:
13400-13-0
Molecular Weight:
151.90
EC Number:
236-487-3
MDL number:
MFCD00010960
UNSPSC Code:
12352302
PubChem Substance ID:
24857410
NACRES:
NA.22
Assay:
99.9% trace metals basis

Quality Level

200

Assay

99.9% trace metals basis

mp

682 °C (lit.)

density

4.115 g/mL at 25 °C (lit.)

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 as a base in a Suzuki cross-coupling synthesis of ortho-substituted biaryls. Also employed as a reagent for nucleophilic fluorination of primary halides and sulfonates in protic media such as tert-butyl and tert-pentyl alcohols.
Used in the successful synthesis of a single-crystal Dion-Jacobson phase, CsLaTa2O7, that has applications in photocatalysis and superconductivity.

Signal Word

Danger

Hazard Statements

H302,H318,H361d,H373,H412

Hazard Classifications

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

Target Organs

Kidney,Adrenal gland

Supplementary Hazards

EUH032

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

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Certificates of Analysis (COA)

Lot/Batch Number
0000303266
0000303266
0000244990
0000244990
0000207365

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Journal of Organometallic Chemistry, 691, 5688-5688 (2006)
Dong Wook Kim et al.
Journal of the American Chemical Society, 128(50), 16394-16397 (2006-12-15)
Aprotic solvents are usually preferred for the SN2 reactions, because nucleophilicity and hence SN2 reactivity are severely retarded by the influence of the partial positive charge of protic solvents. In this work, we introduce a remarkable effect of using tertiary
Tsuyoshi Mita et al.
Organic letters, 13(9), 2354-2357 (2011-04-08)
In the presence of TMSSnBu(3) and CsF, stannylation of N-Boc- and N-Cbz-α-amido sulfones proceeded very well to afford the corresponding α-amido stannanes in moderate-to-high yields. This reaction tolerated α-aryl-, alkenyl-, and alkyl-substituted α-amido sulfones as well as substrates containing either
Patrick J Riss et al.
Bioorganic & medicinal chemistry, 17(22), 7630-7634 (2009-10-23)
PR04.MZ 8-(4-fluoro-but-2-ynyl)-3-p-tolyl-8-aza-bicyclo[3.2.1]octane-2-carboxylic acid methyl ester (1) and LBT999 8-((E)-4-fluoro-but-2-enyl)-3b-p-tolyl-8-aza-bicyclo[3.2.1]octane-2beta-carboxylic acid methyl ester (2) are selective dopamine reuptake inhibitors, derived from cocaine. Compounds 1 and 2 were labelled with fluorine-18 at their terminally fluorinated N-substituents employing microwave enhanced direct nucleophilic fluorination.
Shengcai Zheng et al.
Chemical communications (Cambridge, England), 47(24), 6969-6971 (2011-05-20)
One pot asymmetrical double allylations of sodium sulfide catalyzed by an iridium complex along with a combination of caesium fluoride and water in dichloromethane have been realized and the double allylation products with two C-S bond chiral centers were obtained
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