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Home > Products >  Hexafluorosilicic acid

Hexafluorosilicic acid CAS NO.16961-83-4

  • Min.Order: 1 Kilogram
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  • Hexafluorosilicic acid price
  • Hexafluorosilicic acid CAS16961-83-4
  • Hexafluorosilicic acid supplier in China

Quick Details

  • ProName: Hexafluorosilicic acid
  • CasNo: 16961-83-4
  • Molecular Formula: F6H2Si
  • Appearance: colourless liquid
  • Application: Is preparing fluorine sodium silicate,...
  • DeliveryTime: 15 days after order confirmed
  • PackAge: 25kg/drum;200kg/drum as per your reque...
  • Port: Shanghai, Ningbo, Tianjin, etc
  • ProductionCapacity: 10 Metric Ton/Month
  • Purity: 99%
  • Storage: Stored in cool, dry and ventilation pl...
  • Transportation: by courier door to door or by sea
  • LimitNum: 1 Kilogram


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hexafluorosilicic acid chemical properties
bp  108-109°c
density  1.22 g/ml at 25 °c
refractive index  1.3500
fp  108-109°c
storage temp.  −20°c
solubility  h2o: 1 mg/ml, clear, colorless
merck  14,4182
stability: stable in aqueous solution.
cas database reference 16961-83-4(cas database reference)
epa substance registry system silicate(2-), hexafluoro-, dihydrogen(16961-83-4)
safety information
hazard codes  c
risk statements  34
safety statements  26-36/37/39-45-27
ridadr  un 1778 8/pg 2
wgk germany  3
rtecs  vv8225000
hazard note  corrosive
tsca  yes
hazardclass  8
packinggroup  ii
hazardous substances data 16961-83-4(hazardous substances data)
msds information
provider language
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acros english
alfa english
hexafluorosilicic acid usage and synthesis
chemical properties colourless liquid; often supplied as a colourless solution in water
general description a colorless fuming liquid with a penetrating pungent odor. corrosive to metals and tissue. both the fumes and very short contact with the liquid can cause severe and painful burns. used in water fluoridation, in hardening cement and ceramics, as a wood preservative.
air & water reactions fumes in air. soluble in water with release of heat and corrosive fumes.
reactivity profile hexafluorosilicic acid can react with strong acids (such as sulfuric acid) to release fumes of toxic hydrogen fluoride. attacks glass and materials containing silica. reacts exothermically with chemical bases (examples: amines, amides, inorganic hydroxides). reacts with active metals, including iron and aluminum to dissolve the metal and liberate hydrogen and/or toxic gases. can initiate polymerization in certain alkenes. reacts with cyanide salts and compounds to release gaseous hydrogen cyanide. flammable and/or toxic gases are also often generated by reactions with dithiocarbamates, isocyanates, mercaptans, nitrides, nitriles, sulfides, and weak or strong reducing agents. additional gas-generating reactions may occur with sulfites, nitrites, thiosulfates (to give h2s and so3), dithionites (so2), and carbonates. can catalyze (increase the rate of) chemical reactions. decomposes when heated to the boiling point to produce very toxic and corrosive hydrogen fluoride gas.
health hazard inhalation of vapor produces severe corrosive effect on mucous membrane. ingestion causes severe burns of mouth and stomach. contact with liquid or vapor causes severe burns of eyes and skin.
fire hazard special hazards of combustion products: irritating fumes of hydrogen fluoride may form in fire.


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