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BARIUM SULFATEICSC: 0827
Barium sulphate
Blanc fixe
Artificial barite
October 1999
CAS #: 7727-43-7
EC Number: 231-784-4

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.        In case of fire in the surroundings, use appropriate extinguishing media.   

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation   Use local exhaust or breathing protection.  Fresh air, rest. 
Skin   Protective gloves.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
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   Do not eat, drink, or smoke during work.  Rinse mouth. 

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. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
 
PACKAGING
 
BARIUM SULFATE ICSC: 0827
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
ODOURLESS TASTELESS WHITE OR YELLOWISH CRYSTALS OR POWDER. 

Physical dangers
 

Chemical dangers
Reacts violently with aluminium powder. 

Formula: BaSO4
Molecular mass: 233.43
Decomposes at 1600°C
Density: 4.5 g/cm³
Solubility in water: none 


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
Repeated or prolonged inhalation of dust particles may cause effects on the lungs. This may result in baritosis (a form of benign pneumoconiosis). 


OCCUPATIONAL EXPOSURE LIMITS
TLV: (inhalable fraction): 4 ppm as TWA.
MAK: (as Ba, respirable fraction): 0.3 mg/m3; peak limitation category: II(8); pregnancy risk group: C 

ENVIRONMENT
 

NOTES
Occurs in nature as the mineral barite; also as barytes, heavy spar. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations