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OCTAMETHYLCYCLOTETRASILOXANEICSC: 0310
Cyclotetrasiloxane, octamethyl-September 2002
CAS #: 556-67-2
EC Number: 209-136-7

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Flammable.    NO open flames.    Use water in large amounts, powder, alcohol-resistant foam, carbon dioxide.   

 PREVENT GENERATION OF MISTS!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation   Use ventilation.  Fresh air, rest. 
Skin   Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
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 Nausea. Vomiting.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Collect leaking and spilled liquid in covered containers as far as possible. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
 
PACKAGING
 
OCTAMETHYLCYCLOTETRASILOXANE ICSC: 0310
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS OILY LIQUID. 

Physical dangers
 

Chemical dangers
 

Formula: C8H24O4Si4
Molecular mass: 296.6
Boiling point: 175°C
Melting point: 17.5°C
Relative density (water = 1): 0.96
Solubility in water: none
Vapour pressure, Pa at 21.7°C: 133.3
Flash point: 56°C 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its vapour, through the skin and by ingestion. 

Effects of short-term exposure
 

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn; R: 53-62; S: (2)-36/37-46-51-61 

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    See Also:
       Toxicological Abbreviations