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Certificate of Analysis

Hexafluorosilicic acid, 23% w/w aq. soln.

CAS: 16961-83-4 MDL: MFCD00036289  EINECS: 241-034-8
UN#:UN1778Hazard Class:8Packing Group:II
Alternate Name: Fluorosilicic acid
Hydrofluorosilicic acid


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Chemical Properties

Formula: H2SiF6  Form: Liquid
Formula weight: 144.09  Density: 1.223 at 25^o

Literature References

Reagent, more selective than HF, for cleavage of silyl groups. Unlike HF, excess reagent is not required, and catalytic amounts are sometimes effective. TBDMS can be selectively cleaved in the presence of TBDPS or TIPS groups: J. Org. Chem., 57, 2492 (1992); 58, 5130 (1993); 60, 6674 (1995).

Other References

Merck: 14,4182
UN#: UN1778
Harmonized Tariff Code:   2811.19

GHS Hazard and Precautionary Statements

Hazard Statements : H314-H318

Causes severe skin burns and eye damage. Causes serious eye damage.

Precautionary Statements : P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A

Do not breathe dust/fume/gas/mist/vapours/spray. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.


Risk & Safety

Risk Phrases: 34
Causes burns.
Safety Phrases: 26-27-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Take off immediately all contaminated clothing. In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
RTECS: VV8225000