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FERRIC OXIDEICSC: 1577
Anhydrous ferric oxide
Iron (III) oxide
Diiron trioxide
Iron trioxide
Ferric sesquioxide
October 2004
CAS #: 1309-37-1
UN #: see Notes
EC Number: 215-168-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible.        In case of fire in the surroundings, use appropriate extinguishing media.   

   
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough.  Avoid inhalation of dust.  Fresh air, rest. 
Skin      
Eyes Redness.  Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.   

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
 
PACKAGING
 
FERRIC OXIDE ICSC: 1577
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
REDDISH BROWN-TO-BLACK CRYSTALS OR POWDER. 

Physical dangers
 

Chemical dangers
Reacts with carbon monoxide. This generates explosion hazard. 

Formula: Fe2O3
Molecular mass: 159.7
Melting point: 1565°C
Density: 5.24 g/cm³
Solubility in water: none 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
 

Effects of short-term exposure
May cause mechanical irritation. 

Inhalation risk
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed, especially if powdered. 

Effects of long-term or repeated exposure
Repeated or prolonged inhalation of dust particles may cause effects on the lungs. This may result in siderosis, a benign condition. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: (as Fe): (respirable fraction): 5 mg/m3, as TWA; A4 (not classifiable as a human carcinogen).
MAK: carcinogen category: 3B 

ENVIRONMENT
 

NOTES
There is a UN number associated with ferric oxide but this relates to iron oxide, spent, or iron sponge, spent obtained from coal gas purification which is spontaneously combustible. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations