International Chemical Safety Cards RHODIUM TRICHLORIDE, TRIHYDRATE ICSC: 0746 Rhodium chloride, trihydrate Cl3Rh• 3H2O Molecular mass: 263.3 ICSC #    0746 CAS #     13569-65-8 RTECS # VI9290000 October 26, 1995 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire. In case of fire in the surroundings: all extinguishing agents allowed. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST!  •INHALATION Cough. Avoid inhalation of fine dust and mist. Local exhaust or breathing protection.  •SKIN Redness. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower.  •EYES Redness. Safety spectacles.  •INGESTION Do not eat, drink, or smoke during work. 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: P3 filter respirator for toxic particles). Separated from incompatible substances (see Chemical Dangers). Unbreakable packaging; put breakable packaging into closed unbreakable container. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 0746 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 TRICHLORIDE, TRIHYDRATE ICSC: 0746 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: RED DELIQUESCENT POWDER. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating producing toxic and corrosive fumes including hydrogen chloride (see ICSC 0163). Reacts violently with iron pentacarbonyl and zinc causing explosion hazard. OCCUPATIONAL EXPOSURE LIMITS: TLV: 0.01 mg/m3 (as TWA) (ACGIH 1995-1996). 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: EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Melting point (decomposes): 100°C Relative density (water = 1): >1 Solubility in water: very good ENVIRONMENTAL DATA N O T E S The name of rhodium chloride is often used both the hydrated and the anhydrous form. Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. ADDITIONAL INFORMATION ICSC: 0746 RHODIUM TRICHLORIDE, TRIHYDRATE (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.