Potassium oxide
Potassium oxide
- CAS:
- 12136-45-7
- MF:
- K2O
- MW:
- 94.196
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Properties
- Melting point:
- decomposes at 350℃ [HAW93]
- Boiling point:
- 691.46℃[at 101 325 Pa]
- Density
- 2.350
- vapor pressure
- 0Pa at 25℃
- solubility
- soluble in H2O, ethanol, ethyl ether
- form
- gray cubic crystals
- color
- gray cubic crystals, crystalline
- Water Solubility
- soluble H2O, forming KOH; soluble alcohol and ether [HAW93]
- Crystal Structure
- Reverse CaF2 type
- crystal system
- Cube
- Space group
- Fm3m
- Lattice constant
a/nm b/nm c/nm α/o β/o γ/o V/nm3 0.6447 0.6447 0.6447 90 90 90 0.268
- LogP
- -5.08 at 25℃
Safety Information
- Symbol(GHS)
GHS05
- Signal word
- Danger
- Hazard statements
- H314
- Precautionary statements
- P260-P264-P280-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P305+P351+P338-P405-P501
- RIDADR
- 2033
- HazardClass
- 8
- PackingGroup
- II
Use
potassium monoxide: A grey crystallinesolid, K2O; cubic; r.d. 2.32; decompositionoccurs at 350°C. It maybe prepared by the oxidation ofpotassium metal with potassium nitrate.It reacts with ethanol to formpotassium ethoxide (KOC2H5), andwith liquid ammonia to form potassiumhydroxide and potassamide(KNH2).
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