SODIUM HEXAFLUOROSILICATE 1243
October 1994
CAS No: 16893-85-9 Sodium fluorosilicate
Sodium silicofluoride
RTECS No: VV8410000
Disodium hexafluorosilicate
UN No: 2674
Na2SiF6
EC No: 009-012-00-0
Molecular mass: 188.0
TYPES OF
ACUTE HAZARDS/SYMPTOMS PREVENTION FIRST AID/FIRE FIGHTING
HAZARD/
EXPOSURE
FIRE Not combustible. Gives off irritating In case of fire in the surroundings:
or toxic fumes (or gases) in a fire. use appropriate extinguishing media.
EXPLOSION
EXPOSURE PREVENT DISPERSION OF DUST!
Inhalation Burning sensation. Cough. Sore Avoid inhalation of fine dust and mist. Fresh air, rest. Refer for medical
throat. See Ingestion. Local exhaust or breathing protection. attention.
Skin Redness. Pain. Protective gloves. Protective clothing. Remove contaminated clothes.
Rinse skin with plenty of water or
shower.
Eyes Redness. Pain. Safety goggles or eye protection in First rinse with plenty of water for
combination with breathing protection several minutes (remove contact
if powder. lenses if easily possible), then take to
a doctor.
Ingestion Abdominal cramps. Burning Do not eat, drink, or smoke during Rinse mouth. Refer for medical
sensation. Nausea. Vomiting. work. Wash hands before eating. attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Do NOT wash away into sewer. Sweep spilled T Symbol Do not transport with food and
substance into sealable containers; if appropriate, R: 23/24/25 feedstuffs. Marine pollutant.
moisten first to prevent dusting. Carefully collect S: (1/2-)26-45
remainder, then remove to safe place. Personal Note: A
protection: P3 filter respirator for toxic particles. UN Hazard Class: 6.1
UN Pack Group: III
EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61GT5-III Separated from acids, food and feedstuffs.
Prepared in the context of cooperation between the International
IPCS Programme on Chemical Safety and the European Commission 漏
IPCS 2005
International
Programme on
SEE IMPORTANT INFORMATION ON THE BACK.
Chemical Safety
1243 SODIUM HEXAFLUOROSILICATE
IMPORTANT DATA
Physical State; Appearance Routes of exposure
WHITE GRANULAR POWDER. The substance can be absorbed into the body by inhalation of its
aerosol and by ingestion.
Chemical dangers
Inhalation risk
The substance decomposes on heating producing toxic and
corrosive fumes including fluorine. Reacts with concentrated Evaporation at 20/C is negligible; a harmful concentration of
acids to produce corrosive hydrogen fluoride (see ICSC0283). airborne particles can, however, be reached quickly.
Occupational exposure limits Effects of short-term exposure
TLV: (as F) 2.5 mg/m 3 as TWA; A4 (not classifiable as a human The substance is irritating to the eyes, the skin and the respiratory
carcinogen); BEI issued; (ACGIH 2004). tract. The substance may cause effects on the calcium
MAK: (as F) (Inhalable fraction) 1 mg/m 3; Peak limitation category: metabolism, resulting in cardiac disorders and impaired functions.
I(4); skin absorption (H); Pregnancy risk group: C; (DFG 2005). Medical observation is indicated.
Effects of long-term or repeated exposure
The substance may have effects on the bone, resulting in
fluorosis.
PHYSICAL PROPERTIES
Melting point (decomposes): see Notes Solubility in water: none
Relative density (water = 1): 2.7
ENVIRONMENTAL DATA
NOTES
Melts at red heat with decomposition.
Card has been partly updated in April and October 2005. See sections Occupational Exposure Limits, Emergency Response.
ADDITIONAL INFORMATION
Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible
LEGAL NOTICE for the use which might be made of this information
漏IPCS 2005
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