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Silicon dioxide

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[Fire Fighting]

Not flammable. Use extinguishing media and protective equipment most appropriate for surrounding fire.
[Ingestion]

Treat symptomatically and supportively. Get medical aid.
[Inhalation]

Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
[Skin]

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
[Eyes]

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
[Storage]

Store in a dry area.
[Handling]

Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid ingestion and inhalation.
[Inhalation]

Dust is irritating to the respiratory tract.
[Skin]

Dust may cause mechanical irritation.
[Eyes]

Dust may cause mechanical irritation.
[Ingestion]

May cause irritation of the digestive tract.
[EC Safety Phrase]

S 22
[Personal Protection]

Eyes: Wear dust goggles. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
[Respirators]

A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149. Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
[Exposure Effects]

Prolonged exposure to respirable crystalline quartz may cause delayed lung injury/fibrosis (silicosis).
[Exposure limit(s)]

NIOSH REL: Ca TWA 0.05 mg/m3 See Appendix A NIOSH IDLH: Potential occupational carcinogen 25 mg/m3 (cristobalite, tridymite); 50 mg/m3 (quartz, tripoli)
[Poison Class]

F (Not subject to toxicity classification)
[Appearance]

Colorless, white or variable, black, purple, green crystals.
[Solubility in water]

Insoluble
[Melting Point]

1427
[Boiling Point]

2230
[Vapor Pressure]

10 at 1732 C
[Density]

2.622 - 2.645 g/cm3
[Usage]

Used in mining, quarrying, tunnelling, foundries. Used in the fabrication of stone and clay products; the manufacture of glass, enamels, ceramic products and glazes; as an abrasive and grinding media.
[Product Name]

Silicon dioxide
[Synonyms]

Samd
Silicic anhydride
Silicon dioxide
[CAS]

"CASEN_14808-60-7.htm">14808-60-7
[Formula]

O2Si
[Molecular Weight]

60.08
[EINECS]

238-878-4
[RTECS]

VV7330000
[RTECS Class]

Tumorigen; Mutagen; Human Data
[Beilstein/Gmelin]

13882 (G)
[Small spills/leaks]

Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions.
[Incompatibilities]

Dissolves readily in hydrofluoric acid, forming silicon tetrafluoride, a corrosive gas. Reacts violently with powerful oxidizers such as chlorine trifluoride, manganese trifluoride, oxygen difluoride, vinyl acetate, and certain other fluorine-containing compounds. Will be attacked by strong alkalis.
[Stability]

Stable under normal shipping and handling conditions.
[Decomposition]

Irritating and toxic gases.
[HS Code]

2506 10 00