Cesium carbonate

Formula
Cs2CO3
Structure
Description
white monoclinic crystals, hygroscopic
Uses
Catalyst in ethylene oxide polymerization.

Registry Numbers and Inventories.
CAS
534-17-8
EC (EINECS/ELINCS)
208-591-9
R 36/37/38 40
S 26 36/37/39
RTECS
FK9400000
RTECS class
Mutagen
Merck
13,2020
Beilstein/Gmelin
23963 (G)
Swiss Giftliste 1
G-8156
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
CCs2O3
Formula mass
325.82
Melting point, °C
610
Density
4.24 g/cm3 (20 C)
Solubility in water
Soluble

Hazards and Protection.
Storage
Store in a cool, dry place. Keep container closed when not in use.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, strong acids, moisture.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.

Health.
Poison_Class
4
Exposure effects
   Ingestion
May cause cardiac disturbances. The toxicological properties of this substance have not been fully investigated. May cause central nervous system effects and/or neurological effects.
   Inhalation
May cause effects similar to those described for ingestion.
   Skin
No information regarding skin irritation and other potential effects was found.
   Eyes
Has been reported to be noninjurious when applied to rabbit eyes.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid if irritation develops or persists. Flush skin with plenty of soap and water.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
HS Code
2836 99 18