INTOX Home Page
MANGANESE DIOXIDE ICSC: 0175
Date of Peer Review: November 2003

Manganese(IV)oxide
Manganese peroxide
CAS # 1313-13-9 MnO2
RTECS # OP0350000 Molecular mass: 86.9
UN #
EC # 025-001-00-3
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible but enhances combustion of other substances.
NO contact with combustibles.
In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! AVOID EXPOSURE OF (PREGNANT) WOMEN!

Inhalation Cough.
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
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 take to a doctor.
Ingestion Abdominal pain. Nausea.
Do not eat, drink, or smoke during work.
Rinse mouth. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
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. (Extra personal protection: P2 filter respirator for harmful particles.)
EU Classification
Symbol: Xn
R: 20/22
S: (2-)-25
UN Classification

EMERGENCY RESPONSE STORAGE

Separated from combustible and reducing substances.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK


MANGANESE DIOXIDE ICSC: 0175
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
BLACK TO BROWN POWDER

CHEMICAL DANGERS:
The substance decomposes on heating above 553C 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 manganese) 0.2 mg/m as TWA; Intended change; (ACGIH 2003).
MAK: 0.5 I mg/m; Pregnancy risk group: C; (DFG 2003).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

INHALATION RISK:
Evaporation at 20C 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.
PHYSICAL PROPERTIES
Melting point (decomposes): 553C
Density: 5.0 g/cm
Solubility in water: none
ENVIRONMENTAL DATA
This substance may be hazardous in the environment; special attention should be given to aquatic organisms.
NOTES
Depending on the degree of exposure, periodic medical examination is suggested.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999