Cobalt

Formula
Co
Structure
Description
A black powder.
Uses
Manufacture cobalt salts, in nuclear technology. (60)Cobalt.

Registry Numbers and Inventories.
CAS
7440-48-4
EC (EINECS/ELINCS)
231-158-0
EC Index Number
027-001-00-9
EC Class
Sensitising; Dangerous for the Environment
RTECS
GF8750000
RTECS class
Tumorigen; Mutagen
UN (DOT)
3089
Merck
12,2488
Beilstein/Gmelin
49017 (G)
Swiss Giftliste 1
G-6530
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
Co2
Formula mass
58.93
Melting point, °C
1495.0
Boiling point, °C
2870
Density
8.9 g/cm3 (20 C)
Solubility in water
Insoluble
Heat of vaporization
369.5 kJ/mol

Hazards and Protection.
Storage
Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with skin and eyes. Keep container tightly closed. 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 protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
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. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Pyrophoric cobalt decomposes acetylene in the cold and the metal becomes incandescent. Fused ammonium nitrate can react explosively with powdered cobalt. Pyrophoric cobal, a black powder, burns brilliantly when exposed to air.
Decomposition
Oxides of cobalt.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.
Fire potential
This chemical is flammable.
Hazards
the dust of

Health.
Exposure limit(s)
TLV: 0.02 mg/m3 (as TWA) A3 (ACGIH 1997). MAK: class III A2 (1996) OSHA PEL: TWA 0.1 mg/m3 NIOSH REL: TWA 0.05 mg/m3 NIOSH IDLH: 20 mg/m3 (as Co)
Carcinogin
G-A3, I-2B, CP65
Poison_Class
3
Exposure effects
Repeated exposure may cause sensitization dermatitis. Repeated exposure may cause allergic respiratory reaction (asthma). Chronic inhalation of dust may lead to restricted pulmonary function and interstitial fibrosis.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
Causes respiratory tract irritation. May cause asthmatic attacks due to allergic sensitization of the respiratory tract. May cause asthma and shortness of breath.
   Skin
Causes skin irritation. Prolonged and/or repeated contact may cause irritation and/or dermatitis. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
   Eyes
Causes eye irritation. May cause conjunctivitis.

First aid
 
   Ingestion
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 immediately.
   Inhalation
Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
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
3089
Response guide
Hazard class
4.1
Packing Group
II; III
 
USCG CHRIS Code
COT