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Hexafluorosilicic acid

Hexafluorosilicic acid Suppliers list
Company Name: Henan DaKen Chemical CO.,LTD.
Tel: +86-371-55531817
Products Intro: Product Name:Hexafluorosilicic acid
Purity:99% Package:100g,500g,1KG,10KG,100KG
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: 0371-55170693
Products Intro: CAS:16961-83-4
Purity:99% Package:500G;1KG;5KG;25KG
Company Name: Mainchem Co., Ltd.
Tel: +86-0592-6210733
Products Intro: Product Name:Hexafluorosilicic acid
Company Name: career henan chemical co
Tel: +86-371-86658258
Products Intro: Product Name:Hexafluorosilicic acid
Purity:95%-99% Package:1kg;1USD
Company Name: Shanghai Aladdin Bio-Chem Technology Co.,LTD  Gold
Tel: 021-20337333/400-620-6333
Products Intro: Product Name:Fluorosilicic acid solution
Purity:GR,30.0-32.0% Package:683.1RMB/12X500ML

Lastest Price from Hexafluorosilicic acid manufacturers

  • Hexafluorosilicic acid
  • US $1.00 / kg
  • 2018-12-21
  • CAS:16961-83-4
  • Min. Order: 1kg
  • Purity: 95%-99%
  • Supply Ability: 100kg
Hexafluorosilicic acid Basic information
Product Name:Hexafluorosilicic acid
Synonyms:FLUOROSILIC ACID;FLUOROSILICIC ACID;CORTICOTROPIN A;Hexafluorosilicic acid, 35% w/w aq. soln.;Hexafluorosilicic acid, 23% w/w aq. soln.;Silicofluoric acid: (Fluorosilicic acid);FLUOROSILICIC ACID, 25% in water;Fluorosilicic acid, Hexafluorosilicic acid, Hydrogen hexafluorosilicate
Product Categories:Acids;Electronic Chemicals;Micro/Nanoelectronics;peptide;Fluoride;Inorganics
Mol File:16961-83-4.mol
Hexafluorosilicic acid Structure
Hexafluorosilicic acid Chemical Properties
Boiling point 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
form Liquid
color Clear colorless
Water Solubility Miscible with water.
Merck 14,4182
Stability:Stable in aqueous solution.
CAS DataBase Reference16961-83-4(CAS DataBase Reference)
EPA Substance Registry SystemSilicate(2-), hexafluoro-, dihydrogen(16961-83-4)
Safety Information
Hazard Codes C
Risk Statements 34-35-20/21/22
Safety Statements 26-36/37/39-45-27
RIDADR UN 1778 8/PG 2
WGK Germany 3
RTECS VV8225000
Hazard Note Corrosive
HazardClass 8
PackingGroup II
HS Code 28111990
Hazardous Substances Data16961-83-4(Hazardous Substances Data)
MSDS Information
SigmaAldrich English
ACROS English
ALFA English
Hexafluorosilicic acid Usage And Synthesis
DescriptionHexafluorosilicic acid is a kind of inorganic acid. It is majorly used for the fluoridation of water in United State to minimize the incidence of dental caries and dental fluorosis. For chemical synthesis, it is majorly used for the manufacturing of aluminum fluoride and cryolite as well as many kinds of hexafluorosilicate salts. It can also be used for the production of silicon and silicon dioxide. It can also be used as an electrolyte in the Betts electrolytic process for refining lead. It is also a specialized reagent in organic synthesis for cleaving Si–O bonds of silyl ethers.
Chemical PropertiesFluosilicic acid,H2SiF6, also known as hydrofluorosilicic acid,is a colorless liquid that is soluble in water. It is highly corrosive and toxic,attacking glass and stoneware. Fluosilicic acid is used in water fluoridation, electroplating, and in manufacturing enamels and cement.
Chemical PropertiesFluorosilicic acid is a transparent, colorless fuming liquid.
UsesA 1-2% solution is used widely for sterilizing equipment in brewing and bottling establishments. Other concentrations are used in the electrolytic refining of lead, in electroplating, for hardening cement, crumbling lime or brick work, for the removal of lime from hides during the tanning process, to remove molds, as preservative for timber.
General DescriptionA 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 ReactionsFumes in air. Soluble in water with release of heat and corrosive fumes.
Reactivity ProfileHexafluorosilicic 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.
HazardExtremely corrosive by skin contact and inhalation.
Health HazardInhalation 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 HazardSpecial Hazards of Combustion Products: Irritating fumes of hydrogen fluoride may form in fire.
Safety ProfilePoison by subcutaneous route. A corrosive irritant to sktn, eyes, and mucous membranes. Will react with water or steam to produce toxic and corrosive fumes. When heated to decomposition it emits toxic fumes of F-. See also FLUORIDES.
Potential ExposureA solution of fluorosilicic acid is used for sterilization in the brewing and bottling industry, elec trolytic refining of lead; electroplating, hardening cement; removing mold, and others.
First aidMove victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respira tion with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with run ning water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves.
ShippingUN1778 Fluorosilicic acid, Hazard class: 8; Labels: 8-Corrosive material.
IncompatibilitiesThe aqueous solution is a strong acid. Reacts with water or steam to produce toxic and corrosive fumes of hydrogen fluoride. Incompatible, and may react violently with: bases, aliphatic amines; alkanolamines, alkylene oxides; aromatic amines; amides, ammonia, ammonium hydroxide; calcium oxide; epichlorohydrin, iso cyanates, oleum, organic anhydrides; sulfuric acid; strong oxidizers; vinyl acetate; water. Attacks glass, concrete, and ceramics. The anhydrous form dissociates almost instantly into silicon tetrafluoride and hydrogen fluoride.
Waste DisposalAdd slowly to a large amount of soda ash in solution. Discharge to sewer with large volumes of water
ReferencesRobinson, Tim. "Innovative Processes in Electrometallurgy." Innovative Process Development in Metallurgical Industry. Springer International Publishing, 2016. 385- 392.
Sarawade, Pradip B., et al. "Recovery of high surface area mesoporous silica from waste hexafluorosilicic acid (H 2 SiF 6) of fertilizer industry." Journal of hazardous materials 173.1 (2010): 576-580.
Kauffman, Joel M. "Water fluoridation: a review of recent research and actions." Journal of American Physicians and Surgeons 10.2 (2005): 38.
Krot, V. V., et al. "ChemInform Abstract: Preparation of Amorphous Silicon Dioxide from Hexafluorosilicic Acid." Cheminform 23.48(1992):no-no.
Zorya, L., and V. Krot. "Method of high-purity silica production from hexafluorosilicic acid." Reaction Kinetics & Catalysis Letters 50.1-2(1993):349-354.
Tag:Hexafluorosilicic acid(16961-83-4) Related Product Information
Fluoroboric acid Hydrofluoric acid CADMIUM SILICOFLUORIDE Barium hexafluorosilicate SILVER HEXAFLUOROSILICATE ALUMINUM FLUOROSILICATE LEAD SILICOFLUORIDE Cryptohalite ((NH4)2(SiF6)) FERROUS SILICOFLUORIDE ZINC SILICOFLUORIDE Magnesium fluosilicate COBALT SILICOFLUORIDE Hexafluorosilicic acid Silicone elastomer Ⅲ Sodium fluorosilicate Stearic acid Potassium fluorosilicate Citric acid