CRISTOBALITE (ICSC)

CRISTOBALITE	ICSC: 0809

Date of Peer Review: September 1997

Crystalline silica, cristobalite
Crystalline silicon dioxide, cristobalite

CAS #	14464-46-1	SiO₂
RTECS #	VV7325000	Molecular mass: 60.1
UN #

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

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).

EMERGENCY RESPONSE

STORAGE

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities Š IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK

CRISTOBALITE

ICSC: 0809

IMPORTANT DATA

PHYSICAL STATE; APPEARANCE:
COLOURLESS OR WHITECRYSTALS

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

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (respirable fraction) 0.025 mg/mł; A2 (suspected human carcinogen); (ACGIH 2006).
MAK: Carcinogen category: I (DFG 2005).

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 LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the lungs, resulting in fibrosis (silicosis). This substance is carcinogenic to humans.

PHYSICAL PROPERTIES

Boiling point: 2230°C
Melting point: 1713°C
Relative density (water = 1): 2.3
Solubility in water: none

ENVIRONMENTAL DATA

NOTES

Depending on the degree of exposure, periodic medical examination is suggested. Card has been partially updated in January 2008: see Occupational Exposure Limits.

ADDITIONAL INFORMATION

LEGAL NOTICE

Neither the CEC nor 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

Š IPCS, CEC 2005

    See Also:
       Toxicological Abbreviations