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TELLURIUMICSC: 0986
April 2000
CAS #: 13494-80-9Aurum paradoxum
Metallum problematum
EINECS #: 236-813-4

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible.  Finely dispersed particles form explosive mixtures in air.  NO open flames.  Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.  Use foam, carbon dioxide, dry powder.   

 PREVENT DISPERSION OF DUST! STRICT HYGIENE!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Drowsiness. Metallic taste. Headache. Garlic odour. Nausea.  Use local exhaust or breathing protection.  Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. 
Skin   Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness. Pain.  Wear safety goggles or eye protection in combination with breathing protection if powder.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal pain. Constipation. Vomiting. Further see Inhalation.  Do not eat, drink, or smoke during work.  Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Sweep spilled substance into covered sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations. Personal protection: P3 filter respirator for toxic particles. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Separated from halogens and interhalogens. 
PACKAGING
Unbreakable packaging.
Put breakable packaging into closed unbreakable container. 
TELLURIUM ICSC: 0986
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
DARK GREY-TO-BROWN AMORPHOUS POWDER, WITH METAL CHARACTERISTICS OR SILVERY-WHITE, LUSTROUS CRYSTALLINE SOLID. 

Physical dangers
 

Chemical dangers
Upon heating, toxic fumes are formed. Decomposes on heating. This produces toxic fumes. Reacts vigorously with halogens and interhalogens. This generates fire hazard. Reacts with zinc with incandescence. Lithium silicide attacks tellurium with incandescence. 

Formula: Te
Atomic mass: 127.6
Boiling point: 989.8°C
Melting point: 449.5°C
Density: 6.0-6.25 g/cm³
Solubility in water: none
Auto-ignition temperature: 340°C  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The aerosol is irritating to the eyes and respiratory tract. The substance may cause effects on the liver and central nervous system. Exposure could cause garlic-like breath. Medical observation is indicated. 

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

Effects of long-term or repeated exposure
 


Occupational exposure limits
TLV: 0.1 mg/m3, ppm, as TWA 

ENVIRONMENT
 

NOTES
Do NOT take working clothes home. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations
       Tellurium (UKPID)