IPCS INCHEM Home
ZINC STEARATEICSC: 0987
Octadecanoic acid, zinc salt
Zinc distearate
Stearic acid, zinc salt
November 2000
CAS #: 557-05-1
EC Number: 209-151-9

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Finely dispersed particles form explosive mixtures in air.  NO open flames.  Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust. Prevent build-up of electrostatic charges (e.g., by grounding).  Use water spray, powder, foam, carbon dioxide.   

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough.  Avoid inhalation of dust and mist.  Fresh air, rest. Refer for medical attention. 
Skin     Rinse skin with plenty of water or shower. 
Eyes   Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. Give one or two glasses of water to drink. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
 
PACKAGING
 
ZINC STEARATE ICSC: 0987
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE FINE SOFT 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 and toxic fumes including zinc oxide. 

Formula: C36H70O4Zn / Zn(C18H35O2)2
Molecular mass: 632.3
Melting point: 130°C
Density: 1.1 g/cm³
Solubility in water: none
Flash point: 277°C o.c.
Auto-ignition temperature: 420°C
Explosive limits, vol% in air: 20-?
Octanol/water partition coefficient as log Pow: 1.2  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol. 

Effects of short-term exposure
 

Inhalation risk
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly. 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
TLV: (inhalable fraction): 10 mg/m3, as TWA.
TLV: (respirable fraction): 3 mg/m3, as TWA.
TLV: A4 (not classifiable as a human carcinogen) 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
 

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.
    See Also:
       Toxicological Abbreviations