International Chemical Safety Cards MANGANESE DIOXIDE ICSC: 0175 MANGANESE DIOXIDE Manganese(IV)oxide Manganese peroxide MnO2 Molecular mass: 86.9 CAS # 1313-13-9 RTECS # OP0350000 ICSC # 0175 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: all extinguishing agents allowed. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST! AVOID EXPOSURE OF (PREGNANT) WOMEN! INHALATION Cough. Shortness of breath. 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. Wash hands before eating. Rinse mouth. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. Do NOT absorb in saw-dust or other combustible absorbents (extra personal protection: P2 filter respirator for harmful particles). Separated from combustible and reducing substances, strong oxidants. Xn symbol R: 20/22 S: (2-)25 SEE IMPORTANT INFORMATION ON BACK ICSC: 0175 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards MANGANESE DIOXIDE ICSC: 0175 I M P O R T A N T D A T A 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. Reacts violently with oxidants causing fire and explosion hazard. Reacts violently with aluminium on heating. OCCUPATIONAL EXPOSURE LIMITS (OELs): TLV (as Mn): ppm; 5.0 (dust) or 1 (fume) mg/m3; as STEL: 3 mg/m3 (fume) (ACGIH 1994-1995). MAK as Mn: ppm; 0.5 mg/m3 (1994). 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 of this substance irritates the respiratory tract. Inhalation of dust may cause bronchitis and pneumonitis. The effects may be delayed. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the lungs and nervous system , resulting in bronchitis, pneumonitis, neurologic and neuropsychiatric disorders (manganism). Animal tests show that this substance possibly causes toxic effects upon human reproduction. PHYSICAL PROPERTIES Melting point (decomposes): 553░C Relative density (water = 1): 5.0 Solubility in water: none ENVIRONMENTAL DATA N O T E S Depending on the degree of exposure, periodic medical examination is indicated. Manganese Black is a common name. ADDITIONAL INFORMATION ICSC: 0175 MANGANESE DIOXIDE © IPCS, CEC, 1993

IMPORTANT LEGAL NOTICE: Neither the CEC or 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. 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.