ICSC 0809 - CRISTOBALITE

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

CRISTOBALITE

ICSC: 0809
_{September 1997}

Crystalline silica, cristobalite
Crystalline silicon dioxide, cristobalite

CAS No: 14464-46-1
RTECS No: VV7325000

SiO₂
Molecular mass: 60.1

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	SAFE STORAGE

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/m³; 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	ENVIRONMENTAL DATA
Boiling point: 2230°C Melting point: 1713°C Relative density (water = 1): 2.3 Solubility in water: none

NOTES

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

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2006

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Updated by AS. Approved by GS. Last update: 29.01.2008