Manganese(IV)oxide
Manganese peroxide
MnO2
Molecular mass: 86.9
ICSC # 0175
CAS # 1313-13-9
RTECS # OP0350000
EC # 025-001-00-3
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible but enhances combustion of other substances.
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NO contact with combustibles.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Exposure
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PREVENT DISPERSION OF DUST!
AVOID Exposure OF (PREGNANT) WOMEN!
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•Inhalation
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Cough.
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Local exhaust or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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Protective gloves.
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Rinse and then wash skin with water and soap.
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•Eyes
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Safety goggles,
or eye protection in combination with breathing protection if powder.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Abdominal pain.
Nausea.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Personal protection: P2 filter respirator for harmful particles.
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Do NOT absorb in saw-dust or other combustible absorbents.
Do NOT let this chemical enter the environment.
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Separated from
combustible and reducing substances.
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Xn symbol
R: 20/22
S: 2-25
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Important Data
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Physical State; Appearance:
BLACK
TO BROWN
POWDER
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating above 553°C
producing manganese(III)oxide and oxygen
, which increases fire hazard.
The substance is a strong oxidant and reacts violently with combustible and reducing materials causing fire and explosion hazard.
Reacts
violently with
aluminium
on heating.
Occupational Exposure Limits:
TLV: (as Mn) 0.2 mg/m3 as TWA; (ACGIH 2006).
MAK: as Mn (Inhalable fraction) 0.5 mg/m3
Pregnancy risk group: C;
(DFG 2005).
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol
and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.
Effects of Short-Term Exposure:
The aerosol
is irritating to
the respiratory tract.
Effects of Long-Term or Repeated Exposure:
The substance may have effects on the
lungs
and
central nervous system
, resulting in increased susceptibility to bronchitis, pneumonitis and neurologic, neuropsychiatric disorders (manganism).
Animal tests show that this substance possibly causes toxicity to human reproduction or development.
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Physical
Properties
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Decomposes at 535 °C
Density: 5.0
g/cm3
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Solubility in water:
none
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Environmental
Data
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This substance may be hazardous in the environment; special attention should be given to aquatic organisms.
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N O T E S
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Depending on the degree of exposure, periodic medical examination is suggested.
Card updated in Oct 2006 - long term effects
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ADDITIONAL INFORMATION
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ICSC: 0175
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MANGANESE DIOXIDE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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