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COBALT ICSC: 0782
Date of peer-review: October 1997

(powder)
CAS # 7440-48-4 Co
RTECS # GF8750000 Atomic mass: 58.9
UN #
EC # 027-001-00-9
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Divided dust may ignite on contact with air or oxygen.
NO contact with strong oxidants.
Special powder, dry sand, NO other agents.
EXPLOSION Finely dispersed particles form explosive mixtures in air.
Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.

EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE!

Inhalation Cough. Laboured breathing. Shortness of breath.
Local exhaust or breathing protection.
Fresh air, rest.
Skin Dry skin.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness.
Face shield, or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Abdominal pain. Vomiting.
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Do NOT let this chemical enter the environment. (extra personal protection: P3 filter respirator for toxic particles).
EU Classification
Symbol: Xn
R: 42/43
S: (2-)22-24-37
UN Classification

EMERGENCY RESPONSE STORAGE

Separated from strong oxidants.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2001

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COBALT ICSC: 0782
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
ODOURLESS, SILVER-GRAY POWDER

CHEMICAL DANGERS:
The substance may spontaneously ignite on contact with air, when finely divided. Reacts with strong oxidants (e.g. fused ammonium nitrate) causing fire and explosion hazard. Can promote decomposition of various organic substances.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.02 mg/m^3 (as TWA) A3 (ACGIH 1997). MAK: class III A2 (1996)
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of dust and by ingestion.

INHALATION RISK:
Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

EFFECTS OF SHORT-TERM EXPOSURE:
Inhalation of dust may cause asthmatic reactions (see Notes).

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation exposure may cause asthma. Lungs may be affected by repeated or prolonged exposure. The substance may have effects on the heart, resulting in cardiomyopathy. This substance is possibly carcinogenic to humans.
PHYSICAL PROPERTIES
Boiling point: 2870C
Melting point: 1493C
Relative density (water = 1): 8.9
Solubility in water: none
ENVIRONMENTAL DATA
This substance may be hazardous to the environment; special attention should be given to aquatic organisms.
NOTES
Depending on the degree of exposure, periodic medical examination is indicated. The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Anyone who has shown symptoms of asthma due to this substance should avoid all further contact with this substance. Do NOT take working clothes home. Aquacat, Super cobalt, cobalt-59, C.I.77320, NCI-C60311 are trade names.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 2001

See Also:
        Cobalt (UK PID)
        Cobalt, (ICSC)