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COBALT CARBONYL ICSC: 0976
Date of Peer Review: April 2004

Dicobalt octacarbonyl
Cobalt tetracarbonyl
Octacarbonyldicobalt
CAS # 10210-68-1 C8O8Co2 / (OC)3Co:(CO)2:Co(CO)3
RTECS # GG0300000 Molecular mass: 341.9
UN # 3281
EC #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames. NO contact with oxidants.
Powder, water spray, foam, carbon dioxide.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE!

Inhalation Cough. Sore throat. Shortness of breath. Laboured breathing. Symptoms may be delayed (see Notes).
Local exhaust or breathing protection.
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin Redness. Pain.
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
Eyes Pain. Redness.
Safety goggles, or eye protection in combination with breathing protection if powder.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Abdominal pain. Burning sensation in the throat and chest. Nausea.
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Then remove to safe place. Personal protection: self-contained breathing apparatus.
Airtight. Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.
EU Classification
UN Classification
UN Hazard Class: 6.1
UN Pack Group: II
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61GT3-II-S
Separated from strong oxidants. Well closed. Keep in a well-ventilated room.
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 1999

SEE IMPORTANT INFORMATION ON BACK
COBALT CARBONYL ICSC: 0976
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
ORANGE CRYSTALS.

CHEMICAL DANGERS:
The substance decomposes on warming or under the influence of air producing toxic fumes of carbon monoxide and cobalt (see ICSC 0023, ICSC 0785). Reacts with oxidants causing fire hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (as Co) 0.1 mg/m as TWA; (ACGIH 2004).
MAK not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and by ingestion.

INHALATION RISK:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes and the skin. The substance is severely irritating to the respiratory tract. Inhalation of may cause lung oedema (see Notes). The effects may be delayed. Medical observation is indicated.

PHYSICAL PROPERTIES
Decomposes below boiling point at 52C
Melting point: 51C
Density: 1.7 g/cm
Solubility in water: none
Vapour pressure, Pa at 20C: about 200
ENVIRONMENTAL DATA

NOTES
Do NOT take working clothes home. The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered. Environmental effects from the substance have not been investigated.
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 1999