International Chemical Safety Cards BARIUM ACETATE ICSC: 1073 Dibarium diacetate Acetic acid, barium salt C4H6BaO4 Molecular mass: 255.4 ICSC #    1073 CAS #     543-80-6 RTECS # AF4550000 UN #        1564 EC #         056-002-007 October 15, 2001 Peer reviewed TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible. In case of fire in the surroundings: use appropriate extinguishing media. EXPLOSION EXPOSURE PREVENT DISPERSION OF DUST! STRICT HYGIENE!  •INHALATION 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 Abdominal pain. Diarrhoea. Nausea. Vomiting. Weakness. Shortness of breath. Do not eat, drink, or smoke during work. Rinse mouth. Refer for medical attention. See Notes. 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. Do NOT let this chemical enter the environment. (Extra personal protection: P2 filter respirator for harmful particles.) Separated from strong oxidants, acids , food and feedstuffs . Note: A Xn symbol R: 20/22 S: 2-28 UN Hazard Class: 6.1 UN Packing Group: III SEE IMPORTANT INFORMATION ON BACK ICSC: 1073 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 BARIUM ACETATE ICSC: 1073 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE CRYSTALS OR POWDER . PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on burning producing toxic fumes . Reacts with strong oxidants and acids . OCCUPATIONAL EXPOSURE LIMITS: TLV: (as Ba) 0.5 mg/m³ (ACGIH 2001). MAK: (as Ba) 0.5 mg/m³ (DFG 2000). ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered. EFFECTS OF SHORT-TERM EXPOSURE: The substance may cause effects on the gastrointestinal tract and, by lowering the serum potassium level, on the muscles, heart and nervous system , resulting in muscle paralysis, cardiac dysrythmia and respiratory failure . Exposure (ingestion of high doses) may result in death . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Density: 2.47 g/cm3 Solubility in water, g/100 ml at 20°C: 59 ENVIRONMENTAL DATA The substance is harmful to aquatic organisms. N O T E S Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Transport Emergency Card: TEC (R)-(barium compounds) 61S1564-III ADDITIONAL INFORMATION ICSC: 1073 BARIUM ACETATE (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.