IPCS INCHEM Home
CRISTOBALITEICSC: 0809
November 2016
CAS #: 14464-46-1Crystalline silica, cristobalite
Crystalline silicon dioxide, cristobalite
Crystobalite

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

 PREVENT DISPERSION OF DUST! AVOID ALL CONTACT!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough.  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.  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. Wash away remainder with plenty of water. 

According to UN GHS Criteria

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

Transportation
UN Classification
 

STORAGE
Separated from strong oxidants. 
PACKAGING
 
CRISTOBALITE ICSC: 0809
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: 1713°C
Density: 2.3 g/cm³
Solubility in water: none 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
Exposure mainly occurs via 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 when dispersed. 

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


Occupational exposure limits
TLV: (respirable fraction): 0.025 mg/m3, ppm, as TWA; A2 (suspected human carcinogen).
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
 

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.
    See Also:
       Toxicological Abbreviations