IPCS INCHEM Home
MAGNESIUM STEARATE
ICSC: 1403
Peer-Review Status: 17.10.2001 Validated
Octadecanoic acid, magnesium salt
Dibasic magnesium stearate 
CAS #: 557-04-0 RTECS #: WI4390000
EINECS #: 209-150-3
    Formula: C36H70MgO4 / Mg(C18H35O2)2
Molecular mass: 591.3

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.  Closed system, ventilation, explosion-proof electrical equipment and lighting. Prevent deposition of dust.   
 
EXPOSURE   PREVENT DISPERSION OF DUST!   
Inhalation Cough.  Use local exhaust.  Fresh air, rest. 
Skin   Protective gloves.   
Eyes   Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Vomiting.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Rest. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Personal protection: particulate filter respirator adapted to the airborne concentration of the substance.   
EC Classification
 
UN Classification
 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
   

IMPORTANT DATA
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
Decomposes on burning. This produces irritating fumes. 

Occupational exposure limits
TLV: 10mg/m³ as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2001). 

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 ENVIRONMENTAL DATA
Melting point: 88°C
Density: 1.02 g/cm³
Solubility in water: none
Flash point: see Notes 
 

NOTES
The substance is combustible but no flash point is available in literature. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.
    See Also:
       Toxicological Abbreviations