Caesium fluoride Property

Melting point:

682 °C(lit.)

Boiling point:

1251 °C

Density 

4.115 g/mL at 25 °C(lit.)

vapor pressure 

0Pa at 25℃

Flash point:

1251°C

storage temp. 

0-6°C

solubility 

H₂O: 3 M at 20 °C, clear, colorless

form 

Powder/Lump

color 

White

Specific Gravity

4.115

PH

6.5-7.5 (25℃, 3M in H2O)

Water Solubility 

369 g/100 mL (18 ºC)

Sensitive 

Hygroscopic

λmax

λ: 260 nm Amax: 0.05
λ: 280 nm Amax: 0.05

Crystal Structure

NaCl type

crystal system

Cube

Merck 

14,2012

Space group

Fm3m

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.602	0.602	0.602	90	90	90	0.2182

Exposure limits

ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3

Stability:

hygroscopic

InChIKey

XJHCXCQVJFPJIK-UHFFFAOYSA-M

LogP

0.23 at 20℃

CAS DataBase Reference

13400-13-0(CAS DataBase Reference)

NIST Chemistry Reference

Cesium fluoride(13400-13-0)

EPA Substance Registry System

Cesium fluoride (CsF) (13400-13-0)

Safety

Hazard Codes 

T,C

Risk Statements 

23/24/25-34-62-41-38-32

Safety Statements 

26-36/37/39-45

RIDADR 

UN 2923 8/PG 2

WGK Germany 

3

RTECS 

FK9650000

F 

3-10

Hazard Note 

Corrosive

TSCA 

T

HazardClass 

6.1

PackingGroup 

III

HS Code 

28261990

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H318Causes serious eye damage

H373May cause damage to organs through prolonged or repeated exposure

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P202Do not handle until all safety precautions have been read and understood.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P308+P313IF exposed or concerned: Get medical advice/attention.

Caesium fluoride Chemical Properties,Usage,Production

Description

Caesium fluoride can be used as an analytical reagent, and also for the manufacture of optical crystals
It can be used for the preparation of fluorinated isocyanate.
During the Suzuki cross-coupling synthesis reaction, it can be used as a base for the positive substitution of the biaryls compound; it can also be used as a nucleophile for the fluorination of protic mediate such as the halide and sulfonate contained in tert-butyl alcohol or t-amyl alocohol. It can also be used as catalyst for the Silyl enol ether reaction of carbonyl compounds; used for efficient synthesis of single crystal Dion-Jacobson phase CsLaTa2O7 tto be applied to photocatalytic and superconductivity.

Chemical Properties

white crystalline powder

Uses

Used as a base in a Suzuki cross-coupling synthesis of ortho-substituted biaryls.5 Also employed as a reagent for nucleophilic fluorination of primary halides and sulfonates in protic media such as tert-butyl and tert-pentyl alcohols.6

Uses

A preperation of building block for synthesis of fluoroallylic compounds.

Uses

Cesium fluoride is an inorganic compound with the chemical formula CsF, which is a hygmoscopic white salt. Cesium fluoride can be used as a source of fluoride anion for organic synthesis. Caesium has the highest electropositivity of all non-radioactive elements and fluorine has the highest electronegativity of all elements.

Uses

Catalyst in oxidation reactions; as a solid base when adsorbed onto Celite, q.v. Fluoride source in organic synthesis. Inorganic scintillator.

General Description

Cesium fluoride is an inorganic compound known to be a source of fluoride ion and a catalyst in organic synthesis. It has been used in many organic reactions like 1,4?elimination, desilylation, transesterification, acylation, nucleophilic aromatic substitution, etherification, cross?coupling reactions and so on.

Hazard

A poison.

Flammability and Explosibility

Not classified

Safety Profile

A poison. Incompatible with benzenediazonium tetrafluoroborate and difluoroamine. When heated to decomposition it emits toxic fumes of F-.

Purification Methods

Crystallise it from aqueous solution by adding ethanol.