The manufacturing process is documented by an NSF auditor at the initial audit of the manufacturing site and during each subsequent annual unannounced audit … Fluosilicic acid is the feedstock for "virtually all organic and inorganic fluorine-bearing chemicals". Reacts with water and steam. 1. a. mixing the crude gypsum with an aqueous fluosilicic acid (hydrofluosilicic acid, silicofluoric acid (H 2 SiF 6)) solution at about 160°-195° F. to obtain a liquid phase and a solid phase; b. separating the liquid phase from the solid phase (e.g., by filtration, centrifugation, or decantation) while maintaining the temperature of the liquid phase within a range of about 160°-195° F.; Consumer Uses . By recovering by-product fluosilicic acid from fertilizer manufacturing, water and air pollution are minimized, and water authorities have a low-cost source of fluoride available to them.” for the forecast year up to 2029. These corrosion data are mainly based on results of general corrosion laboratory tests, carried out with pure chemicals and water solutions nearly saturated with air (the corrosion rate can be quite different if the solution is free from oxygen). Domestic production data for The fluosilicic acid are carefully produced without hampering their molecular compositions. Buss ChemTech is the market leader for fluorine chemical process technologies. fluorine-bearing chemicals". Compare Products: Select up to 4 products. Fluosilicic acid - Identification, toxicity, use, water pollution potential, ecological toxicity and regulatory information Note : See Working with the Information on this Page section below for important notes about this data. “In regard to the use of fluosilicic acid as the source of fluoride for fluoridation, this agency regards such use as an ideal solution to a long standing problem. If analyses are desired, the following protocol is recommended. hydrofluosilicic acid synonyms, hydrofluosilicic acid pronunciation, ... Noun 1. hydrofluosilicic acid - an unstable poisonous corrosive acid known primarily in the form of its salts fluosilicic acid acid - any of various... Hydrofluosilicic acid - definition of hydrofluosilicic acid by The Free Dictionary. Fluosilicic acid definition, an unstable acid, H2SiF6, known only in its colorless, poisonous, fuming aqueous solution or in the form of its salts: used chiefly as a wood preservative, a disinfectant, and as a hardening agent in the manufacture of ceramic ware, cement, and concrete. The solution in water is a strong acid. Fluosilicic Acid Fluosilicic acid is a corrosive, catalytic, water-reactive, inorganic acid that can be converted into a variety of hexafluorosilicate salts. About 41,200, 4,700, and 13,200 tons of byproduct fluorosilicic acid were sold for water fluoridation, AlF3 production for the aluminum industry, and for other uses, such as sodium silicofluoride production, respectively. : 16961-83-4 1.2 Relevant identified uses of the substance or mixture and uses advised against Identified uses : Laboratorychemicals, Industrial & for professional use only. Fluosilicic acid (FSA) is obtained in large quantities as a by-product from wet phosphoric acid and phosphate fertiliser plants. Attacks many metals. It is used to convert aluminum ore into aluminum metal, to refine lead, as a reagent in organic synthesis, etc. The major use of sodium hexafluorosilicate and fluorosilicic acid is as fluoridation agents for drinking water. These technologies are well proven over 50 years at a wide range of capacities and have been sold world-wide. disinfectants, pest control products) and … Used in water fluoridation, in hardening cement and ceramics, as a wood preservative. You can also use them as fertilizers for better agricultural production. In case of fire in the surroundings: use appropriate extinguishing media. There are no restrictions on fire-fighting media. a. Composed of, or derived from, silicon and fluorine. 1.8.2 Hydrofluosilicic Acid: Hydrofluosilicic acid (HFA), or hydrofluorosilicic acid, or fluosilicic acid is an aqueous solution of H 2 SiF 6. Both chemicals are also used as a chemical intermediate (raw material) for aluminum trifluoride, cryolite (Na3AlF6), silicon tetrafluoride, and other fluorosilicates and have found applications in commercial laundry. Substance information for UN 1778 - Fluorosilicic acid based on the Hazardous Materials Table (Title 49 CFR 172.101) to assist in preparing a risk assessment for … *Please select more than one item to compare The majority of the fluosilicic acid is converted to. This paper describes the preparation and properties of fluosilicic acid and some of its important uses as well as those of its metallic salts, the fluosilicates. hydrofluosilicic acid, sodium fluoride and sodium silicofluoride, presently used for fluoridation of water. The major use of sodium hexafluorosilicate and fluorosilicic acid is as fluoridation agents for drinking water. Fluorosilicic acid is also used to make aluminum fluoride for the aluminum industry. Fluosilicic Acid, chemically written as F6H2Si, is a liquid chemical that is corrosive and requires the right pump to accommodate it. All other chemicals used were reagent grade. Purity Requirements: Analyses of available grades of fluosilicic acid show the presence of arsenic and lead but at levels far below that which would necessitate RMIC values based on a maximum dosage of 1.2 mg of fluoride ion/liter. Fluosilicic acid is recovered when stack gases are scrubbed during the processing of phosphate fertilizers. Use . 1.3 Details of the supplier of the safety data sheet Company : Central Drug House (P ) Ltd 7/28 Vardaan House New Delhi -110002 INDIA Used as source of fluoride. This is typically done during the production of phosphate additives. Unlikely to suffer scaling. This substance is used in the following products: biocides (e.g. This produces toxic fumes including hydrogen fluoride. Search results for fluorosilicic acid at Sigma-Aldrich. See more. This process uses the direct neutralization of the fluosilicic acid with alumina hydroxide in … This produces toxic and corrosive fumes. Sodium hexafluorosilicate has also been used for caries control as part of a silicophosphate cement, an acidic gel in combination with monocalcium phosphate monohydrate, and a two-solution fluoride mouth rinse. Details of the supplier of the safety data sheet PCS Sales (USA), Inc. 1101 Skokie Blvd. Sources/Uses Used as a chemical intermediate, a disinfectant, a water fluoridating agent, a wood preservative, a masonry and ceramic hardener, and a glass additive; it is also used to treat hides and skins, to electroplate chromium, and to electrolytically refine lead; [HSDB] Used in technical paints, oil well acidizing, and to remove mold, rust, and stains from textiles; [NTP] fluosilicic acid is produced by adding sulfuric acid to phosphate ore. Product name : Fluosilicic Acid CAS-No. Global Fluosilicic Acid Market is estimated to be valued US$ XX.X million in 2019. Such a configuration is recommended when the phosphoric acid has a concentration of up to 42-46% P 2 O 5. The slag samples were leached using fluosilicic acid (H2SiF6), a byproduct of the fertilizer industry. The chemical reaction is employed, not for our health, but to slow down the corrosive action of fluosilicic acid on the water district's plumbing metal valves. The solution of fluosilicic acid and ammonium fluosilicate, or ammonium fluosilicate alone if ammonium fluoride is used for scrubbing, is reacted with ammonia thereby converting the fluorine-containing salts to ammonium fluoride and regenerating the colloidal silica for recycle to the phosphoric acid concentrators. Obtained in large quantities as a colorless fuming liquid with a penetrating odor..., silicon Tetrafluoride and Hydrogen gas safety data sheet PCS Sales ( USA ), Inc. 1101 Skokie Blvd estimated... Of fluosilicic a raw material sold world-wide decomposition ( 1050 C ) it emits highly toxic and corrosive of. 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