From Freepedia
| Caesium hydroxide
|
| Image:Caesium hydroxide.jpg
|
| General
|
| Molecular formula
| CsOH
|
| Molar mass
| 149.91 g/mol
|
| Appearance
| white solid,
deliquescent
|
| CAS number
| [21351-79-1]
|
| EINECS number
| ???-???-?
|
| Properties
|
| Density and phase
| 3.675 g/cm3, solid
|
| Solubility in water
| 395.5 g/100 ml (15°C)
|
| Solubility in ethanol
| Soluble
|
| Melting point
| 272.3°C
|
| Basicity (pKb)
| 0
|
| Structure
|
Coordination
geometry
| ?
|
| Crystal structure
| ?
|
| Thermodynamic data
|
Standard enthalpy
of
formation ΔfH°solid
| -416.73 kJ/mol
|
Standard molar entropy
S°solid
| 98.74 J.K−1.mol−1
|
| Safety data
|
| EU classification
| not listed
|
| PEL-TWA (OSHA)
| none
|
| Flash point
| non flammable
|
| RTECS number
| FK9800000
|
| Supplementary data page
|
Structure and
properties
| n, εr, etc.
|
Thermodynamic
data
| Phase behaviour
Solid, liquid, gas
|
| Spectral data
| UV, IR, NMR, MS
|
| Related compounds
|
| Other anions
| Caesium oxide
|
| Other cations
| Potassium hydroxide
Rubidium hydroxide
|
Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references
|
Caesium hydroxide, (CsOH) is a chemical compound consisting of an atom of caesium and a hydroxide group (also known as hydroxyl). It is a powerful base, much like other alkali metal hydroxides such as sodium hydroxide and potassium hydroxide.
Due to its high reactivity, Caesium hydroxide is extremely hygroscopic. Laboratory caesium hydoxide is typically a hydrate.
However, this compound is not usually used in experiments as the extraction of caesium is very expensive and the fact that it behaves very like rubidium hydroxide and potassium hydroxide but even more vividly then they do.
Caesium hydroxide can be obtained by the following chemical equation:
- 2Cs + 2H2O → 2CsOH + H2
Caesium hydroxide is one of the strongest alkalis know, it is capable of dissolving glass faster then Hydrofluoric acid. Caesium hydroxide has a Ph os 15 when dissolved in water.
The reaction is explosive.
External links
