CESIUM OXIDE Property

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

RIDADR 

3180

HazardClass 

4.1

PackingGroup 

II

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H314Causes severe skin burns and eye damage

H315Causes skin irritation

H318Causes serious eye damage

H319Causes serious eye irritation

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P310Immediately call a POISON CENTER or doctor/physician.

P321Specific treatment (see … on this label).

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

P363Wash contaminated clothing before reuse.

P405Store locked up.

P501Dispose of contents/container to..…

CESIUM OXIDE Chemical Properties,Usage,Production

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]