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BORON OXIDEICSC: 0836
April 2014
CAS #: 1303-86-2Boric anhydride
Boron trioxide
Boron sesquioxide
Diboron trioxide
EINECS #: 215-125-8

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible.        In case of fire in the surroundings, use appropriate extinguishing media.   

 PREVENT DISPERSION OF DUST! STRICT HYGIENE!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Sore throat.  Use local exhaust or breathing protection.  Fresh air, rest. 
Skin Redness.  Protective gloves. Protective clothing.  Rinse and then wash skin with water and soap. 
Eyes Redness. Pain.  Wear safety spectacles or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Nausea. Vomiting. Abdominal pain. Diarrhoea. Headache. Drowsiness. Convulsions.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Refer for medical attention . 

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

excl mark;warncancer;health haz
DANGER
Causes serious eye irritation
May cause respiratory irritation
May damage fertility or the unborn child 

Transportation
UN Classification
 

STORAGE
Dry. Well closed. 
PACKAGING
 
BORON OXIDE ICSC: 0836
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE HYGROSCOPIC POWDER OR GRANULES 

Physical dangers
 

Chemical dangers
Attacks metal in the presence of moist air. This produces hydrogen. This generates fire and explosion hazard. 

Formula: B2O3
Molecular mass: 69.6
Boiling point: ~1860°C
Melting point: 450°C
Relative density (water = 1): 2.46 (cryst)
Relative density (water = 1): 1.8 (amorph)
Solubility in water, g/l at 25°C: 36 (moderate) 


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system and kidneys. This may result in impaired functions. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly , especially if powdered. 

Effects of long-term or repeated exposure
The substance may have effects on the upper respiratory tract. Animal tests show that this substance possibly causes toxicity to human reproduction or development. 


Occupational exposure limits
TLV: 10 mg/m3, - ppm, as TWA 

ENVIRONMENT
 

NOTES
See ICSC 0991. 

ADDITIONAL INFORMATION
  EC Classification
R: 60-61; S: 53-45; Symbol: T 

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    See Also:
       Toxicological Abbreviations