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TRIDYMITEICSC: 0807
November 2016
CAS #: 15468-32-3Crystalline silica, tridymite
Crystalline silicon dioxide, tridymite
EINECS #: 239-487-1

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible.        In case of fire in the surroundings: all extinguishing agents allowed.   

 PREVENT DISPERSION OF DUST! AVOID ALL CONTACT!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough.  Avoid inhalation of dust. Use local exhaust or breathing protection.  Fresh air, rest. 
Skin Redness.  Protective clothing.  Rinse and then wash skin with water and soap. 
Eyes Redness. Pain.  Wear safety goggles or eye protection in combination with breathing protection.  Rinse with plenty of water (remove contact lenses if easily possible). 
Ingestion No acute symptoms expected.  Do not eat, drink, or smoke during work.   

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. Wash away remainder with plenty of water. 

According to UN GHS Criteria

cancer;health haz
DANGER
Causes damage to the lungs and the immune system through prolonged or repeated exposure if inhaled 

Transportation
UN Classification
 

STORAGE
Separated from strong oxidants. 
PACKAGING
 
TRIDYMITE ICSC: 0807
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS OR WHITE CRYSTALS. 

Physical dangers
 

Chemical dangers
Reacts with strong oxidants. This generates fire and explosion hazard. 

Formula: SiO2
Molecular mass: 60.1
Boiling point: 2230°C
Melting point: 1703°C
Density: 2.3 g/cm³
Solubility in water: none 


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
May cause mechanical irritation to the eyes, respiratory tract and skin. 

Inhalation risk
A harmful concentration of airborne particles can be reached quickly. 

Effects of long-term or repeated exposure
The substance may have effects on the lungs. This may result in silicosis. May cause autoimmune diseases. 


Occupational exposure limits
MAK: carcinogen category: 1 

ENVIRONMENT
 

NOTES
Depending on the degree of exposure, periodic medical examination is suggested.
Do NOT take working clothes home. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations