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MANGANESE OXIDEICSC: 1398
Trimanganese tetraoxide
Manganomanganic oxide
October 2001
CAS #: 1317-35-7
EC Number: 215-266-5

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.        In case of fire in the surroundings, use appropriate extinguishing media.   

 PREVENT DISPERSION OF DUST! AVOID EXPOSURE OF (PREGNANT) WOMEN!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin   Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes   Wear safety goggles or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion      

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
 
PACKAGING
 
MANGANESE OXIDE ICSC: 1398
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
BROWN-TO-BLACK CRYSTALLINE POWDER. 

Physical dangers
 

Chemical dangers
 

Formula: Mn3O4
Molecular mass: 228.8
Melting point: 1564°C
Density: 4.8 g/cm³
Solubility in water: none 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. 

Effects of short-term exposure
May cause mechanical irritation. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. 

Effects of long-term or repeated exposure
The substance may have effects on the lungs and central nervous system. This may result in increased susceptibility to bronchitis, pneumonitis and neurologic and neuropsychiatric disorders (manganism). Animal tests show that this substance possibly causes toxicity to human reproduction or development. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: (respirable fraction): 0.02 mg/m3, as TWA.
TLV: (inhalable fraction): 0.14 mg/m3, as TWA.
TLV: A4 (not classifiable as a human carcinogen).
MAK: (as Mn, inhalable fraction): 0.2 mg/m3.
MAK: (as Mn, respirable fraction): 0.02 mg/m3.
MAK: peak limitation category: II(8); pregnancy risk group: C.
EU-OEL: (inhalable fraction): 0.2 mg/m3 as TWA.
EU-OEL: (respirable fraction): 0.05 mg/m3 as TWA 

ENVIRONMENT
 

NOTES
Depending on the degree of exposure, periodic medical examination is suggested.
Occurs in nature as the mineral Hausmannite. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations