Octadecanoic acid, magnesium salt
Dibasic magnesium stearate
C36H70MgO4 / Mg(C18H35O2)2
Molecular mass: 591.3
ICSC # 1403
CAS # 557-04-0
RTECS # WI4390000
Pi, Study (1st batch of chemical part)
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Finely dispersed particles form explosive mixtures in air.
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Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.
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Exposure
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PREVENT DISPERSION OF DUST!
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•Inhalation
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Cough.
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Local exhaust.
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Fresh air, rest.
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•Skin
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Protective gloves.
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•Eyes
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Safety spectacles.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Vomiting.
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Rinse mouth.
Rest.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
(Extra personal protection: P1 filter respirator for inert particles.)
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Important Data
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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
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Occupational Exposure Limits:
TLV: (as stearate) 10 mg/m3 as TWA A4 (ACGIH 2001).
MAK not established.
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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:
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Physical
Properties
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Melting point: 88°C
Density: 1.02
g/cm3
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Solubility in water: none
Flash point: see Notes
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Environmental
Data
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N O T E S
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The substance is combustible but no flash point is available in literature.
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ADDITIONAL INFORMATION
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ICSC: 1403
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MAGNESIUM STEARATE
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(C) IPCS, CEC, 1994
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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.
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