International Chemical Safety Cards RHODIUM ICSC: 1247 Rh Atomic mass: 102.9 (powder) ICSC #    1247 CAS #     7440-16-6 RTECS # VI9069000 October 27, 2004 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE See Chemical dangers. 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 Redness. Safety goggles. 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 Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. Personal protection: P2 filter respirator for harmful particles. See Chemical Dangers. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 1247 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 RHODIUM ICSC: 1247 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: GREY TO BLACK POWDER. PHYSICAL DANGERS: CHEMICAL DANGERS: Reacts violently with halogens causing fire hazard. Rhodium is a catalytic substance and may cause reaction in contact with many organic and inorganic substances , causing fire and explosion hazard. OCCUPATIONAL EXPOSURE LIMITS: TLV: 1.0 mg/m³ as TWA; A4; (ACGIH 2004). MAK: Carcinogen category: 3B; (DFG 2004). NIOSH REL: TWA 0.1 mg/m3 NIOSH IDLH: 100 mg/m3 (as Rh) ROUTES OF EXPOSURE: INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed. EFFECTS OF SHORT-TERM EXPOSURE: May cause mechanical irritation. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 3695°C Melting point: 1965°C Density: 12.4 g/cm³ Solubility in water: none ENVIRONMENTAL DATA N O T E S Health effects of exposure to the substance have not been investigated adequately. Recommendations in this card do not apply to water-soluble rhodium compounds. ADDITIONAL INFORMATION ICSC: 1247 RHODIUM (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.