International Chemical Safety Cards FERROUS OXIDE ICSC: 0793 Ferrous monoxide Iron (II) oxide C.I. 77489 FeO Molecular mass: 71.9 ICSC #    0793 CAS #     1345-25-1 RTECS # April 20, 2005 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible under specific conditions. In case of fire in the surroundings: use appropriate extinguishing media. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST!  •INHALATION Cough. Local exhaust or breathing protection. Fresh air, rest.  •SKIN Protective gloves. Rinse and then wash skin with water and soap.  •EYES Safety spectacles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Do not eat, drink, or smoke during work. Rinse mouth. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: P2 filter respirator for harmful particles. Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 0793 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards FERROUS OXIDE ICSC: 0793 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: BLACK SOLID IN VARIOUS FORMS. PHYSICAL DANGERS: CHEMICAL DANGERS: Depending of the preparation method, the substance may ignite spontaneously on contact of finely divided powder with air or may burn on contact with air when heated above 200°C. The substance readily absorbs carbon dioxide. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK: (Respirable fraction) 1.5 mg/m³ (DFG 2004). ROUTES OF EXPOSURE: INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered. EFFECTS OF SHORT-TERM EXPOSURE: EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the lungs , resulting in siderosis. PHYSICAL PROPERTIES Melting point: 1360°C Density: 5.7 g/cm3 Solubility in water: none ENVIRONMENTAL DATA N O T E S ADDITIONAL INFORMATION ICSC: 0793 FERROUS OXIDE (C) IPCS, CEC, 1994

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.