?? ?????
|
|
?? ????? ??
- ???
- 682 °C(lit.)
- ?? ?
- 1251 °C
- ??
- 4.115 g/mL at 25 °C(lit.)
- ???
- 0Pa at 25℃
- ???
- 1251°C
- ?? ??
- 0-6°C
- ???
- H2O: 3 M at 20 °C, ??, ??
- ??? ??
- ??/???
- ??
- ???
- Specific Gravity
- 4.115
- ??????(pH)
- 6.5-7.5 (25℃, 3M in H2O)
- ???
- 369g/100mL(18℃)
- ??
- Cp(crystal): 0.34 J/(g·K), at 25℃
- Crystal Structure
- NaCl type
- ??
- Hygroscopic
- ?? ??(λmax)
- λ: 260 nm Amax: 0.05
λ: 280 nm Amax: 0.05
- Merck
- 14,2012
- crystal system
- Cube
- 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
- ?? ??
- ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3
- ???
- ???
- InChI
- 1S/Cs.FH/h;1H/q+1;/p-1
- InChIKey
- XJHCXCQVJFPJIK-UHFFFAOYSA-M
- SMILES
- [F-].[Cs+]
- LogP
- 0.23 at 20℃
- CAS ??????
- 13400-13-0(CAS DataBase Reference)
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ??? ?? | T,C | ||
|---|---|---|---|
| ?? ???? ?? | 23/24/25-34-62-41-38-32 | ||
| ????? | 26-36/37/39-45 | ||
| ????(UN No.) | UN 2923 8/PG 2 | ||
| WGK ?? | 3 | ||
| RTECS ?? | FK9650000 | ||
| F ?????? | 3-10 | ||
| ?? ?? ?? | Corrosive | ||
| TSCA | TSCA listed | ||
| ?? ?? | 6.1 | ||
| ???? | III | ||
| HS ?? | 28261990 | ||
| ???? ??? | 11 - Combustible Solids | ||
| Hazard Classifications | Acute Tox. 4 Oral Aquatic Chronic 3 Eye Dam. 1 Repr. 2 STOT RE 2 |
||
| ???? ?? | KE-05439 |
?? ????? C??? ??, ??, ??
??? ??
white crystalline powder??
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.??
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?? ??
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 1,4elimination, desilylation, transesterification, acylation, nucleophilic aromatic substitution, etherification, crosscoupling reactions and so on.???
A poison.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.?? ????? ?? ?? ? ???
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???( 333)?? ??
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