International Chemical Safety Cards MANGANESE, CYCLOPENTADIENYLTRICARBONYL ICSC: 0977 Cyclopentadienyl manganese tricarbonyl MCT C8H5MnO3/C5H5Mn(CO)3 Molecular mass: 204.1 ICSC #    0977 CAS #     12079-65-1 RTECS # OO9720000 UN #        2811 March 16, 1995 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. Heating will cause rise in pressure with risk of bursting. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. Powder, carbon dioxide. EXPLOSION In case of fire: keep drums, etc., cool by spraying with water. EXPOSURE STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR!  •INHALATION Shortness of breath. Avoid inhalation of fine dust and mist. Local exhaust or breathing protection. Fresh air, rest. Half-upright position. Artificial respiration if indicated. Refer for medical attention.  •SKIN MAY BE ABSORBED! Redness. Protective gloves. Protective clothing. Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.  •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 Convulsions. Cough. Laboured breathing. Shortness of breath. Do not eat, drink, or smoke during work. Rinse mouth. Give a slurry of activated charcoal in water to drink. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place (extra personal protection: complete protective clothing including self-contained breathing apparatus). Separated from food and feedstuffs. Cool. Keep under inert gas. Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. R: S: UN Hazard Class: 6.1 SEE IMPORTANT INFORMATION ON BACK ICSC: 0977 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 MANGANESE, CYCLOPENTADIENYLTRICARBONYL ICSC: 0977 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: BRIGHT YELLOW CRYSTALS. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating producing toxic and corrosive fumes. OCCUPATIONAL EXPOSURE LIMITS: TLV (as Mn): ppm; 0.1 mg/m3 (as TWA) (skin) (ACGIH 1994-1995). OSHA PEL: C 5 mg/m3 NIOSH REL: TWA 0.1 mg/m3 skin NIOSH IDLH: No data ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its vapour, through the skin and by ingestion. INHALATION RISK: A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C. EFFECTS OF SHORT-TERM EXPOSURE: The substance irritates the skin. The substance may cause effects on the lungs and nervous system , resulting in lung oedema and convulsions. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: The substance may have effects on the lungs and nervous system. PHYSICAL PROPERTIES Sublimation point: 75-77°C Solubility in water: poor ENVIRONMENTAL DATA N O T E S The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Immediate administration of an appropriate spray, by a doctor or a person authorized by him/her, should be considered. Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. Do NOT take working clothes home. ADDITIONAL INFORMATION ICSC: 0977 MANGANESE, CYCLOPENTADIENYLTRICARBONYL (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.