International Chemical Safety Cards MAGNESIUM CHLORIDE ICSC: 0764 Magnesium chloride MgCl2 Molecular mass: 95.2 ICSC #    0764 CAS #     7786-30-3 RTECS # OM2800000 March 28, 1996 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. Sore throat. Local exhaust. Fresh air, rest. Refer for medical attention.  •SKIN  •EYES Redness. Safety spectacles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Diarrhoea. Do not eat, drink, or smoke during work. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Dry. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 0764 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 MAGNESIUM CHLORIDE ICSC: 0764 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: ODOURLESS, DELIQUESCENT, WHITE SOLID IN VARIOUS FORMS. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes when slowly heated to 300°C producing toxic and corrosive fumes including chlorine. Dissolves in water liberating a considerable amount of heat. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. 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 nuisance-causing concentration of airborne particles can, however, be reached quickly by dispersing. EFFECTS OF SHORT-TERM EXPOSURE: The substance irritates the eyes and the respiratory tract. EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Boiling point: 1412°C Melting point: (rapid heating) 712°C Relative density (water = 1): 2.3 Solubility in water, g/100 ml at 20°C: 54.3 ENVIRONMENTAL DATA N O T E S ADDITIONAL INFORMATION ICSC: 0764 MAGNESIUM CHLORIDE (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.