International Chemical Safety Cards POTASSIUM CARBONATE (ANHYDROUS) ICSC: 1588 Carbonic acid, dipotassium salt Dipotassium carbonate K2CO3 Molecular mass: 138.2 ICSC #    1588 CAS #     584-08-7 RTECS # TS7750000 April 21, 2005 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!  •INHALATION Sore throat. Cough. Local exhaust or breathing protection. Fresh air, rest.  •SKIN Redness. Pain. Protective gloves. Remove contaminated clothes. Rinse skin with plenty of water or shower.  •EYES Redness. Pain. Safety goggles . First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Burning sensation in the throat and chest. Do not eat, drink, or smoke during work. Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Personal protection: P2 filter respirator for harmful particles. Sweep spilled substance into containers. Wash away remainder with plenty of water. Dry. Separated from strong acids. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 1588 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 POTASSIUM CARBONATE (ANHYDROUS) ICSC: 1588 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: COLOURLESS HYGROSCOPIC CRYSTALS OR HYGROSCOPIC WHITE POWDER PHYSICAL DANGERS: CHEMICAL DANGERS: The solution in water is a medium strong base. Reacts violently withacids, chlorine trifluoride. Reacts withpowdered metals. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by ingestion. INHALATION RISK: A harmful concentration of airborne particles can be reached quickly when dispersed. EFFECTS OF SHORT-TERM EXPOSURE: The substance is irritating to the eyes , the skin and the respiratory tract . EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Melting point: 891°C Density: 2.29 g/cm3 Solubility in water, g/100 ml at 20°C: 112 ENVIRONMENTAL DATA N O T E S ADDITIONAL INFORMATION ICSC: 1588 POTASSIUM CARBONATE (ANHYDROUS) (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.