CESIUM OXIDE Chemical Properties

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

CAS DataBase Reference

20281-00-9

EPA Substance Registry System

Cesium oxide (Cs2O) (20281-00-9)

Safety Information

RIDADR 

3180

HazardClass 

4.1

PackingGroup 

II

CESIUM OXIDE Usage And Synthesis

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]

CESIUM OXIDE(20281-00-9)Related Product Information

• Sodium oxide
• Calcium fluoride
• Cupric oxide
• Calcium oxide
• Cesium chloride
• Chromium(III) oxide
• YTTERBIUM OXIDE
• LUTETIUM OXIDE
• Gallium(III) oxide
• Holmium Oxide
• Tetraterbium heptaoxide
• Gadolinium oxide
• Neodymium oxide
• Zirconium dioxide
• Bis(tributyltin) oxide
• Praseodymium oxide
• Yttrium oxide
• Erbium(III) oxide