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COUMARINICSC: 1105
March 1998
CAS #: 91-64-51,2-Benzopyrone
2H-1-Benzopyran-2-one
UN #: 2811
EINECS #: 202-086-7

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible.    NO open flames.    Use water spray, foam, powder, carbon dioxide.   

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation   Use ventilation.  Fresh air, rest. 
Skin MAY BE ABSORBED! Redness. Pain.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes   Wear face shield.  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. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: I, II, III 

STORAGE
Separated from food and feedstuffs. 
PACKAGING
Do not transport with food and feedstuffs. 
COUMARIN ICSC: 1105
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS FLAKES WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
 

Formula: C9H6O2
Molecular mass: 146.14
Boiling point: 297-299°C
Melting point: 68-70°C
Density: 0.94 g/cm³
Solubility in water: poor
Vapour pressure, kPa at 106°C: 0.13
Flash point: 150°C
Octanol/water partition coefficient as log Pow: 1.39  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is irritating to the skin. 

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
This substance is possibly carcinogenic to humans. 


Occupational exposure limits
 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations
       Coumarin (WHO Food Additives Series 16)
       Coumarin (IARC Summary & Evaluation, Volume 10, 1976)
       Coumarin  (IARC Summary & Evaluation, Volume 77, 2000)