International Chemical Safety Cards MAGNESIUM STEARATE ICSC: 1403 Octadecanoic acid, magnesium salt Dibasic magnesium stearate C36H70MgO4 / Mg(C18H35O2)2 Molecular mass: 591.3 ICSC #    1403 CAS #     557-04-0 RTECS # WI4390000 October 17, 2001 Peer reviewe TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire. NO open flames. In case of fire in the surroundings: use appropriate extinguishing media. EXPLOSION Finely dispersed particles form explosive mixtures in air. Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting. EXPOSURE PREVENT DISPERSION OF DUST!  •INHALATION Cough. Local exhaust. Fresh air, rest.  •SKIN Protective gloves.  •EYES Safety spectacles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.  •INGESTION Vomiting. Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Rest. SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. (Extra personal protection: P1 filter respirator for inert particles.) R: S: SEE IMPORTANT INFORMATION ON BACK ICSC: 1403 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 STEARATE ICSC: 1403 I M P O R T A N T D A T A PHYSICAL STATE; APPEARANCE: WHITE POWDER PHYSICAL DANGERS: Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc. CHEMICAL DANGERS: The substance decomposes on burning, producing irritating fumes . OCCUPATIONAL EXPOSURE LIMITS: TLV: (as stearate) 10 mg/m³ as TWA A4 (ACGIH 2001). MAK not established. ROUTES OF EXPOSURE: The substance can be absorbed into the body by inhalation. INHALATION RISK: A nuisance-causing concentration of airborne particles can be reached quickly when dispersed. EFFECTS OF SHORT-TERM EXPOSURE: EFFECTS OF LONG-TERM OR REPEATED EXPOSURE: PHYSICAL PROPERTIES Melting point: 88°C Density: 1.02 g/cm3 Solubility in water: none Flash point: see Notes ENVIRONMENTAL DATA N O T E S The substance is combustible but no flash point is available in literature. ADDITIONAL INFORMATION ICSC: 1403 MAGNESIUM STEARATE (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.