International Chemical Safety Cards MAGNESIUM SULFATE ICSC: 1197 Magnesium sulphate MgSO4 Molecular mass: 120.4 ICSC #    1197 CAS #     7487-88-9 RTECS # OM4500000 October 24, 1994 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  •INHALATION Local exhaust. Fresh air, rest.  •SKIN Rinse skin with plenty of water or shower.  •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 cramps. Diarrhoea. Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Give plenty of water to drink. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Then wash away with plenty of water (extra personal protection: P1 filter respirator for inert particles). Dry. R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 1197 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 SULFATE ICSC: 1197 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE CRYSTALS OR POWDER WITH BITTER SALINE TASTE. PHYSICAL DANGERS: CHEMICAL DANGERS: The substance decomposes on heating or on burning giving off toxic and corrosive vapours such as sulfur oxides. OCCUPATIONAL EXPOSURE LIMITS: TLV not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation and by ingestion. INHALATION RISK: EFFECTS OF SHORT-TERM EXPOSURE: EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Decomposes below melting point: 1124°C Relative density (water = 1): 2.65 Solubility in water: good ENVIRONMENTAL DATA N O T E S Magnesium sulfate heptahydrate is also known as Epsom salts or bitter salts. ADDITIONAL INFORMATION ICSC: 1197 MAGNESIUM SULFATE (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.