Cesium chloride

Formula
CsCl
Structure
Description
white cubic crystals, hygroscopic
Uses
Substance is used in the final evacuation of radio and television vacuum tubes.

Registry Numbers and Inventories.
CAS
7647-17-8
EC (EINECS/ELINCS)
231-600-2
S 22 36/37
RTECS
FK9625000
RTECS class
Mutagen; Reproductive Effector
Merck
13,2021
Beilstein/Gmelin
13675 (G)
Swiss Giftliste 1
G-1365
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
ClCs
Formula mass
168.36
Melting point, °C
646
Boiling point, °C
1303
Vapor pressure, mmHg
12.991 (894 C)
Vapor density (air=1)
5.8
Density
3.7808 g/cm3
Solubility in water
1860 g/L (20 C)
Viscosity
0.01891 cp (874 C)
Dielectric constant
6.34 (19 C)
Thermal expansion
0.0005743/K
Heat of fusion
19.1 kJ/mol
Heat of vaporization
186.7 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed. Store protected from moisture.
Handling
Wash hands before eating. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Wash clothing before reuse.
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
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation. Do not get water inside containers.
Disposal code
28
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Incompatible with bromine trifluoride.
Decomposition
Chlorine, none, chloride fumes.

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. Use agent most appropriate to extinguish fire. Do NOT get water inside containers.

Health.
Poison_Class
4
Exposure effects
   Ingestion
Ingestion of large amounts may cause gastrointestinal irritation.
   Inhalation
May cause respiratory tract irritation. Low hazard for usual industrial handling.
   Skin
May cause skin irritation. Low hazard for usual industrial handling.
   Eyes
May cause eye irritation. Dust may cause mechanical irritation.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid.

Transport.
HS Code
2827 39 80