Cobalt(II) chloride

  • Cobaltus chloride
  • Cobalt muriate
  • Cobalt dichloride
Formula
CoCl2
Structure
Description
Pink to red solid with a slight sharp odor.
Uses
Invisible ink, humidity & water indicator, in hygrometers, temp indicator in grinding, in electroplating, for painting on glass & porcelain, prepn of catalysts, fertilizer & feed additive, as absorbent for military poison gas & ammonia, in manufacture of vitamin b12.

Registry Numbers and Inventories.
CAS
7646-79-9
EC (EINECS/ELINCS)
231-589-4
EC Index Number
027-004-00-5
EC Class
Carcinogenic Category 2; Harmful; Sensitising; Dangerous for the Environment
RTECS
GF9800000
RTECS class
Tumorigen; Drug; Mutagen; Reproductive Effector; Human Data
UN (DOT)
3288
Merck
12,2498
Beilstein/Gmelin
9298 (G)
Swiss Giftliste 1
G-2329
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
Cl2Co
Formula mass
129.83
Boiling point, °C
1049
Vapor pressure, mmHg
31 (298 C)
Vapor density (air=1)
4.5
Density
1.6795 g/cm3 (20 C)
Solubility in water
Very soluble
Viscosity
1.11 cd (22 C)
Heat of fusion
30.9 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Handling
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 clothing to prevent skin exposure.
Respirators
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions. 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. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Moisture - oxidizing agents - alkali metals.
Decomposition
Hydrogen chloride, chlorine, irritating and toxic fumes and gases, 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 spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
Not flammable
Combustion products
Toxic cobalt oxide fumes may form in fire.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
TLV (as Co): 0.02 mg/m3 (as TWA) A3 (ACGIH 1997).
Carcinogin
G-A3, I-2B
Poison_Class
3
Exposure effects
Cobalt compounds may cause cancer based upon animal studies.
   Ingestion
Harmful if swallowed. Causes gastrointestinal tract irritation.
   Inhalation
Causes respiratory tract irritation. May cause asthmatic attacks due to allergic sensitization of the respiratory tract.
   Skin
Causes skin irritation. Chronic exposure may result in sensitization.
   Eyes
Causes eye irritation.

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

Transport.
UN number
3288
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
CBC