| Identification | Back Directory | [Name]
CESIUM OXIDE | [CAS]
20281-00-9 | [Synonyms]
Oxydicesium
dicesium oxide
Einecs 243-679-0
Cesium oxide (cs2o) | [EINECS(EC#)]
243-679-0 | [Molecular Formula]
Cs2O | [MDL Number]
MFCD00010958 | [MOL File]
20281-00-9.mol | [Molecular Weight]
281.81 |
| Chemical Properties | Back Directory | [Melting point ]
490°C | [density ]
4.650 | [solubility ]
very soluble in H2O | [form ]
yellow-orange hexagonal crystals | [color ]
yellow-orange hexagonal, hexane crystals, crystalline | [Water Solubility ]
very soluble H2O; soluble acids [HAW93] | [Crystal Structure]
Reverse CdCl2 type | [crystal system]
Three sides | [Space group]
R3m | [Lattice constant]
| a/nm | b/nm | c/nm | α/o | β/o | γ/o | V/nm3 | | 0.4256 | 0.4256 | 1.899 | 90 | 90 | 120 | 0.2979 |
| [InChI]
InChI=1S/2Cs.O/q2*+1;-2 | [InChIKey]
KOPBYBDAPCDYFK-UHFFFAOYSA-N | [SMILES]
[Cs+].[Cs+].[O-2] | [CAS DataBase Reference]
20281-00-9 | [EPA Substance Registry System]
Cesium oxide (Cs2O) (20281-00-9) |
| Hazard Information | Back Directory | [Chemical Properties]
6mm pieces and smaller with 99% purity; yellow-brown powder(s); lemon yellow at ?80°C, reddish orange crystal(s) at room temp, cherry red >180°C [KIR79] [HAW93] [STR93] [CER91] |
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