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MANGANESE DIOXIDEICSC: 0175
Manganese(IV)oxide
Manganese peroxide
November 2003
CAS #: 1313-13-9
EC Number: 215-202-6

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible but enhances combustion of other substances.    NO contact with combustible substances.    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 local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin   Protective gloves.  Rinse and then wash skin with water and soap. 
Eyes   Wear 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 refer for medical attention. 
Ingestion Abdominal pain. Nausea.  Do not eat, drink, or smoke during work.  Rinse mouth. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Do NOT absorb in saw-dust or other combustible absorbents. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Separated from combustible substances and reducing agents. 
PACKAGING
 
MANGANESE DIOXIDE ICSC: 0175
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
BLACK-TO-BROWN POWDER. 

Physical dangers
 

Chemical dangers
Decomposes above 553°C . This produces manganese(III)oxide and oxygen, which increases fire hazard. The substance is a strong oxidant. It reacts violently with combustible and reducing materials. This generates fire and explosion hazard. Reacts with aluminium on heating. 

Formula: MnO2
Molecular mass: 86.9
Decomposes at 535°C
Density: 5.0 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
The aerosol is irritating to the respiratory tract. 

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): 0.1 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: (as Mn, inhalable fraction): 0.2 mg/m3 as TWA.
EU-OEL: (as Mn, respirable fraction): 0.05 mg/m3 as TWA 

ENVIRONMENT
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 suggested. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn; R: 20/22; S: (2)-25 

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    See Also:
       Toxicological Abbreviations