Cesium fluoride | Yunnan Titan New Materials Technology Co.,Ltd

Mô tả

Caesium fluoride (cesium fluoride in North America), is an inorganic compound usually encountered as a hygroscopic white solid. It is used in organic synthesis as a source of the fluoride anion. Caesium has the lowest electronegativity of all non-radioactive elements and fluorine has the highest electronegativity of all elements.

Caesium fluoride is prepared by the action of hydrofluoric acid on caesium hydroxide or caesium carbonate, followed by removal of water.

It is more soluble than sodium fluoride or potassium fluoride. It is available in anhydrous form, and if water has been absorbed it is easy to dry by heating at 100 °C for two hours in vacuo.

CsF reaches a vapor pressure of 1 kilopascal at 825 °C, 10 kPa at 999 °C, and 100 kPa at 1249 °C.

Caesium fluoride


IUPAC name[hide] Caesium fluoride
Other names[hide] Cesium fluoride
Identifiers
CAS number	13400-13-0^Y
ChemSpider	24179^Y
RTECS number	FK9650000
Jmol-3D images	Image 1
Properties
Molecular formula	CsF
Molar mass	151.90 g/mol
Appearance	white crystalline solid
Density	4.115 g/cm³
Melting point	682 °C (955 K)
Boiling point	1251 °C (1524 K)
Solubility in water	367 g/100 ml (18 °C)
Structure
Crystal structure	cubic, cF8
Space group	Fm3m, No. 225
Coordination geometry	Octahedral
Dipole moment	7.9 D
Hazards
MSDS	External MSDS
EU Index	Not listed
Flash point	Non-flammable
Related compounds
Other anions	Caesium chloride Caesium bromide Caesium iodide Caesium astatide
Other cations	Lithium fluoride Sodium fluoride Potassium fluoride Rubidium fluoride
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

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Analysis reagents and manufacturing of the optical crystal

Phiếu kiểm nghiệm

Product name	Cesium fluoride	CAS：13400-13-0
Description	white crystalline solid
TEST ITEMS		TEST RESULTS
CsF		≥99.5％
Ca		≤0.002％
K		≤0.04％
Al		≤0.001％
Pb		≤0.05％
Ba		≤0.01％
SO₄^2-		≤0.05％
Cl		≤0.03％
Br		≤0.03％