Cobalt(III) oxide

  • Cobalt trioxide
  • Cobaltic oxide
  • Dicobalt trioxide
Formula
Co2O3
Structure
Description
Black to gray crystalline powder

Registry Numbers and Inventories.
CAS
1308-04-9
EC (EINECS/ELINCS)
215-156-7
RTECS
GG2900000
RTECS class
Tumorigen
Beilstein/Gmelin
11113 (G)
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
Co2O3
Formula mass
165.86
Decomposition point, °C
895
Density
5.09 g/cm3
Solubility in water
Insoluble

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Protective gloves and clothing. Safety goggles or eye protection in combination with breathing protection.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.
Stability
No data.
Incompatibilities
Strong oxidizing agents.

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. Use agent most appropriate to extinguish fire.

Health.
Exposure limit(s)
NIOSH REL: TWA 0.05 mg/m3 (as Co) OSHA PEL: TWA 0.1 mg/m3 (as Co) 20 mg/m3 (as Co)
Carcinogin
G-A3, I-2B
Exposure effects
   Ingestion
Abdominal pain, vomiting.
   Inhalation
Acute effects - cough, labored breathing, shortness of breath, sore throat. Irritates the eyes, skin and respiratory tract. Aerosol may cause asthmatic reactions.<BR>Chronic effects - skin sensitization, asthma, Lungs may be affected by repeated or prolonged exposure. Possibly carcinogenic in humans.
   Skin
Dry skin.
   Eyes
Redness.

First aid
 
   Ingestion
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
   Inhalation
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
   Skin
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
   Eyes
If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Transport.