International Chemical Safety Cards

TRIDYMITE ICSC: 0807
TRIDYMITE
Crystalline silica, tridymite
Crystalline silicon dioxide, tridymite
SiO2
Molecular mass: 60.1
CAS # 15468-32-3
RTECS # VV7335000
ICSC # 0807
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible.

In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST!

  • INHALATION
    		• Cough.
    		Local exhaust or breathing protection.

  • SKIN



  • EYES

    		• Safety goggles, or eye protection in combination with breathing protection.

  • INGESTION



    • SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    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).


    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0807 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

    International Chemical Safety Cards

    TRIDYMITE ICSC: 0807

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    PHYSICAL STATE; APPEARANCE:
     COLOURLESS OR WHITE CRYSTALS

    PHYSICAL DANGERS:

    CHEMICAL DANGERS:
     Reacts with strong oxidants causing fire and explosion hazard.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
     TLV: 0.05 mg/m3 (respirable dust) (ACGIH 1997).
    MAK: 0.15 mg/m3; (1996)


    		ROUTES OF EXPOSURE:
     The substance can be absorbed into the body by inhalation.

    INHALATION RISK:
     Evaporation at 20░C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

    EFFECTS OF SHORT-TERM EXPOSURE:

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
     The substance may have effects on the lungs , resulting in fibrosis (silicosis). This substance is possibly carcinogenic to humans.
    PHYSICAL
    PROPERTIES
    Boiling point: 2230░C
    Melting point: 1703░C
    		 Relative density (water = 1): 2.3
    Solubility in water: none
    ENVIRONMENTAL
    DATA
    N O T E S
    Depending on the degree of exposure, periodic medical examination is indicated.
    ADDITIONAL INFORMATION


    ICSC: 0807 TRIDYMITE
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.