F6H2Si
144.091 g/mol
Industrial ChemicalDanger
Hexafluorosilicic acid
CAS16961-83-4EC241-034-8
Category
Industrial Chemical
Compound Class
Inorganic Salt
Primary Use
Metal preparation and plating
Hexafluorosilicic acid is an inorganic compound that exists as colorless aqueous solutions of its salts. It is primarily used in metal preparation and plating processes.
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
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solvent, antifreeze, chemical intermediate
Safety Reference
Danger
H314Causes severe skin burns and eye damage
H290May be corrosive to metals
H302Harmful if swallowed
H311Toxic in contact with skin
H318Causes serious eye damage
H332Harmful if inhaled
H335May cause respiratory irritation
H372Causes damage to organs through prolonged or repeated exposure
H402Harmful to aquatic life
H412Harmful to aquatic life with long lasting effects
H371May cause damage to organs
H373May cause damage to organs through prolonged or repeated exposure
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for Hexafluorosilicic acid (CAS 16961-83-4) is 2811.19.
HS code (international, 6-digit)
2811.19
EU CN code (8-digit)
2811 19 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
hexafluorosilicon(2-);hydron
InChIKey
OHORFAFFMDIQRR-UHFFFAOYSA-P
SMILES
[H+].[H+].F[Si-2](F)(F)(F)(F)F
Synonyms (28)
- Acide fluorosilicique
- Acide fluosilicique
- Acido fluosilicico
- Dihydrogen hexafluorosilicate
- FLUOROSILIC ACID
- Fluorosilicic acid
- Fluorosilicic acid (H2SiF6)
- Fluosilicic acid
- Hexafluorokieselsaeure
- Hexafluorokieselsaiure
- Hexafluorokiezelzuur
- Hexafluorosilicic acid
- Hexafluosilicic acid
- Hydrofluorosilicic acid
- Hydrofluosilicic acid
- Hydrosilicofluoric acid
- Kieselfluorwasserstoffsaure
- Kiezelfluorwaterstofzuur
- Sand acid
- Silicofluoric acid
- Silicofluoride
- hexafluorosilicon(2-);hydron
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