20989

Cesium fluoride

BioUltra, ≥99.0% (F)

• Synonym(s): NSC 84270
• 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: 57647888
• NACRES: NA.25

Properties

• product line: BioUltra
• Quality Level: 100
• Assay: ≥99.0% (F)
• impurities: insoluble matter, passes filter test; ≤0.005% total nitrogen (N)
• loss: ≤0.5% loss on drying, 110 °C
• pH: 6.5-7.5 (25 °C, 3 M in H₂O)
• mp: 682 °C (lit.)
• solubility: H₂O: 3 M at 20 °C, clear, colorless
• density: 4.115 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤500 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: Al: ≤10 mg/kg; As: ≤0.5 mg/kg; Ba: ≤10 mg/kg; Bi: ≤5 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤30 mg/kg; K: ≤100 mg/kg; Li: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Mo: ≤5 mg/kg; Na: ≤50 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Sr: ≤5 mg/kg; Zn: ≤5 mg/kg
• λ: 3 M in H₂O
• UV absorption: λ: 260 nm A_max: 0.05; λ: 280 nm A_max: 0.05
• SMILES string: [F-].[Cs+]
• InChI: 1S/Cs.FH/h;1H/q+1;/p-1
• InChI key: XJHCXCQVJFPJIK-UHFFFAOYSA-M

Description

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.

Safety Information

• Pictograms: GHS05,GHS07,GHS08
• Signal Word: Danger
• Hazard Statements: H302 - H318 - H361d - H373 - H412
• Precautionary Statements: P202 - P273 - P280 - P301 + P312 - P305 + P351 + P338 - P308 + P313
• Hazard Classifications: Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Repr. 2 - STOT RE 2
• 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