Document 6ewQ8pbwYXZXGmnzR519BrvE

CRISTOBALITE CAS No: 14464-46-1 RTECS No: VV7325000 UN No: EC No: Crystalline silica, cristobalite Crystalline silicon dioxide, cristobalite SiO2 Molecular mass: 60.1 TYPES OF HAZARD/ EXPOSURE FIRE ACUTE HAZARDS/SYMPTOMS Not combustible. PREVENTION EXPLOSION 0809 October 1997 FIRST AID/FIRE FIGHTING In case of fire in the surroundings: all extinguishing agents allowed. EXPOSURE Inhalation Cough. Skin Eyes Ingestion PREVENT DISPERSION OF DUST! Local exhaust or breathing protection. Safety goggles, or eye protection in combination with breathing protection. SPILLAGE DISPOSAL Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. (extra personal protection: P3 filter respirator for toxic particles). PACKAGING & LABELLING Symbol R: S: EMERGENCY RESPONSE STORAGE IPCS International Programme on Chemical Safety fi m jfiio't) tw UNEP Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission IPCS 1999 SEE IMPORTANT INFORMATION ON THE BACK. 0809 CRISTOBALITE Physical State; Appearance COLOURLESS OR WHITE CRYSTALS IMPORTANT DATA Routes of Exposure The substance can be absorbed into the body by inhalation. Chemical Dangers Reacts with strong oxidants causing fire and explosion hazard. Occupational Exposure Limits TLV: 0.05 mg/m3 (respirable dust) (ACGIH 1997). MAK: 0.15 mg/m3; (1996) Inhalation Risk Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. Effects of Long-term or Repeated Exposure The substance may have effects on the lungs, resulting in fibrosis (silicosis). This substance is carcinogenic to humans. Boiling point: 2230C Melting point: 1713C PHYSICAL PROPERTIES Relative density (water = 1): 2.3 Solubility in water: none ENVIRONMENTAL DATA NOTES Depending on the degree of exposure, periodic medical examination is indicated. ADDITIONAL INFORMATION LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information IPCS 1999