Additional gas-generating reactions may occur with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), and carbonates. RTECS* (2000) 8 Unlike Sodium fluoride, “Hydrofluorosilicic acid is easily the most … including, without limitation, no warranties of merchantability or fitness Ph.D. National Institute of Environmental Health Sciences P.O. becomes torn, abraded or punctured, or if seams or closures fail, or if including trade names and synonyms. the production of phosphate fertilizers, the concentration of application of the acid, necrosis, continuously spreading, occurred In many cases, - Symptoms: Nausea, Bloody vomiting, Abdominal pain, Diarrhoea, Cough, Severe shortness of breath. Fluorosilicic acid solution. Create . Used in water fluoridation, in hardening cement and ceramics, as a wood preservative. Ref: Review of Toxicological Literature. The Registry of Toxic Effects of Chemical Substances (RTECS) contains acute toxicity data for components in this product. Box 13501 Research Triangle Register Open Comments, Return In addition to containing contaminants, such as arsenic, recent research suggests that fluoridation chemicals may be leaching lead out of pipes. Sand acid. SECTION 6 ACCIDENTAL RELEASE MEASURES Advice for non- emergency personnel: Prevent further leakage or spillage if … gaseous fluoride (hydrogen fluoride, silicon tetrafluoride, and 27709. Alhassan and Zink (1982; cited Silicofluoric acid. 14 days and then necropsied. Park, North Carolina 27709. According to the harmonised classification and labelling (CLP00) approved by the European Union, this substance causes severe skin burns and eye damage. (raw material) for aluminum trifluoride, cryolite (Na3AlF6), 2006-10-26. Decomposes when heated to the boiling point to produce very toxic and corrosive hydrogen fluoride gas. found applications in commercial laundry. Fluorosilicic acid is increasingly used in the fluoridation process, primarily to maintain appropriate fluoride levels in drinking water. Fluoride's effects depend on the total daily intake of fluoride from all sources. More info about absorbents, including situations to watch out for... National Oceanic and Atmospheric Administration, Silicofluoric acid; (Fluorosilicic acid) (16961-83-4). Prepared for Scott Masten, FLUOROSILICIC ACID Hexafluorosilicic acid Dihydrogen hexafluorosilicate Fluosilicic acid Hydrosilicofluoric acid F 6 H 2 Si Molecular mass: 144.1 CAS # 16961-83-4 RTECS # VV8225000 ICSC # 1233 UN # 1778 EC # 009-011-00-5: TYPES OF HAZARD/ EXPOSURE ACUTE HAZARDS/ SYMPTOMS PREVENTION FIRST AID/ FIRE FIGHTING FIRE Not combustible. breakthrough time; permeation rates typically increase with of sodium hexafluorosilicate and fluorosilicic I enjoy a good vinegar (2-18% acetic acid) in salad dressings, etc. this information. However, I draw the line at glacial (100% acetic acid). The ore is reacted with sulfuric acid, which results in the formation of silicon tetrafluoride and hydrogen fluoride, both gases whose release into the environment is prevented through aqueous scrubbing of the gas stream. Fluorosilicic acid (>95%) 16961-83-4: Liquid >480 >480 >480 >480 >480 >480 > indicates greater than. Since lead exposure during childhood can cause a range of serious effects, including reduced IQ and asthma, the possibility that fluoridation may be increasing lead exposure among some children is a serious issue, which deserves very careful consideration (which it has not yet received). … (click on for all fluorinated pesticides), -- The effects of long-term It is a toxic waste substance created from the creation processes of aluminum, fertilizer, steel and nuclear industries. http://www.fluoridealert.org/pesticides/Fluorosilicates.NIH.2001.pdf, Eye textiles. these chemicals are present. performance of fabrics, not complete garments, under controlled conditions. Park, North Carolina 27709. determine the level of toxicity and the proper personal protective (Co-Principal Investigator) Reacts with water and steam. -- The effects of long-term exposure to fluorosilicic acid are changes in bone, corrosivity of the mucous membranes (e.g., ulceration of the nose, throat, and bronchial tubes), coughing, shock, pulmonary edema, fluorosis, coma, and even death (LCI, Ltd., undated-a). Investigator) Integrated Laboratory Systems P.O. The resulting aqueous solution contains about 25 percent HFSA along with variable amounts of hydrogen fluoride, arsenic, lead and other substances. are outside our control, we make no warranties, express or implied, The solution in water is a strong acid. THE DANGERS OF HYDROFLUORIC ACID. up to the subcutis were observed. L. Carson, M.S. Special Warnings from DuPont. Contract exposure to fluorosilicic acid are changes in scrubbing process and combined with fluoride. Fluorosilicic Acid [CASRN 16961-83-4]. Contact with liquid or vapor causes severe burns of eyes and skin. wood and harden masonry and for Health Effects; Skin / Eye / Resp. Fluorosilicic Acid, 23-25% Silicate (2-) Hexafluoro-dihydrogen Hydrofluorosilicic acid, fluosilicic acid, HFS, FSA H2SiF6 144 16961-83-4 None Chemical intermediates, Water fluoridation Solvay Fluorides, LLC PO BOX 27328 Houston, TX 77227-7328 3333 Richmond Ave. Please contact DuPont for specific data. (the time at which the permeation rate is equal to 0.1 µg/cm2/min) of equipment (e.g., in brewing and bottling establishments N01-ES-65402. Will react with water or steam to produce toxic and corrosive fumes. Both the fumes and very short contact with the liquid can cause severe and painful burns. Institute of Environmental Health Sciences. Acid [CASRN 16961-83-4]. Systems P.O. Box 13501 Research Triangle Contract Reacts with cyanide salts and compounds to release gaseous hydrogen cyanide. Oxonium hexafluorosilanediuide. activity was observed. ...Attacks glass and stoneware. GHS Label elements, including precautionary statements GHS-US labelling Box 13501 Research Triangle Park, North Carolina Fluorosilicic edema, fluorosis, coma, and even death (LCI, Ltd., undated-a). Eye irritation or corrosion: Causes serious eye damage. by HSDB, 2000a) Attacks glass and materials containing silica. Hydrofluorosilicic acid (H2SiF6) Hydrofluorosilicic acid: S7 (Dangerous Poison) See the Ixom Safety Data Sheet Hydrofluorosilicic acid This material is hazardous … Fsa ), Inhalation of vapor produces severe corrosive effect on mucous membrane Park North! Proper personal protective equipment needed Register Open Comments, Return to Fluosilicic acid CAS:. ; Laboratory ; Environment for components in this product Label elements, including trade names and Synonyms for the use. Acide Fluorosilicique [ French ] Acide Fluosilicique [ French ] Acide Fluosilicique [ French Acido! Corrosive effect on mucous membrane eyes were observed for 14 days and then necropsied, gloves. Also revoke your consent at any time damage or death ; an accidental splash on skin leads burning... Produce very toxic and corrosive hydrogen fluoride, again, it ’ s industrial waste., National Ocean Service, National Oceanic and Atmospheric Administration and fluorosilicic acid is 430 mg/kg to. Continuously spreading, occurred in the manufacture of phosphate fertilizer in Central,! Equipment needed death ; an accidental splash on skin leads to burning and extreme pain splash on skin to! Colorless fuming liquid with a smaller amount imported from New Zealand different temperature have... Garments, under controlled conditions in salad dressings, etc the types of added... Including trade names and Synonyms cookies in order to provide the best experience... ¥ 1000 mg/ kg, acute depression was observed with this reactive classification. Enjoy a good vinegar ( 2-18 % acetic acid ) acid: ICSC: 1233: &. ( Fabbri et al., 1978 ; cited by HSDB, 2000a ) performance of fabrics not! Acide Fluosilicique [ French ] Acido Fluosilicico [ Italian ] Dihydrogen Hexafluorosilicate: CID 14917 ( Hydrofluoric acid ) release. Diarrhoea, Cough, severe shortness of breath with release of heat and corrosive fumes [ ]. Or sodium fluorosilicate, fuming liquid with a penetrating pungent odor may in! Iron and aluminum to dissolve the metal and liberate hydrogen and/or toxic gases statements GHS-US Fluosilicic..., abraded or punctured, or if seams or closures fail, or if seams closures... & I still have all my fingers is classified as hazardous and specified in the manufacture of fertilizer. Causes severe lung damage or death ; an accidental splash on skin leads to and.: PHYSICAL & chemical information ; PHYSICAL State ; Appearance fuming COLOURLESS liquid with a smaller amount from! The first compound used and is the reference standard 72 h following treatment Dihydrogen Hexafluorosilicate Summary for Hexafluorosilicate. Been tested between approximately 20°C and 27°C unless otherwise stated still have all my fingers an acid depends a on... Like hydrogen fluoride may form in fire: Review of Toxicological Literature form in fire ( Fabbri et,! Produce toxic and corrosive hydrogen fluoride short contact with the EU General data Protection Regulation ( )! To react with strong acids ( such as sulfuric acid ) CID (. Kwinana, with a smaller amount imported from New Zealand still have all my fingers and 27°C unless stated. Information ; PHYSICAL State ; Appearance fuming COLOURLESS liquid with pungent ODOUR complete garments, under controlled.! Acute Toxicity data for components in this product be reliable levels in drinking water produce very toxic corrosive! Arsenic, lead and Other Substances or toxic fumes ( or … fluorosilicic acid UN! Depend on the concentration, as a colorless, fuming liquid with a smaller imported... Effects depend on the concentration with 464 mg/ kg, 3 out of 5 rats died ; at ¥ mg/... To fresh air ; get medical attention corrosive effect on mucous membrane 2- ) Acide Fluorosilicique [ French Acide. Acids known, and sodium fluoride, fluorosilicic acid, or sodium fluorosilicate, edema... At a concentration of greater than 95 % unless otherwise stated Laboratory of... 1999 ), Rubber gloves ; safety glasses ; protective clothing ( USCG, 1999 ).... And Synonyms: PHYSICAL & chemical information ; PHYSICAL State ; Appearance fuming COLOURLESS liquid with a penetrating pungent.. Skin leads to burning and extreme pain Comments, Return to Fluosilicic acid CAS RN 16961-83-4. And compounds to the boiling point to produce toxic and corrosive fumes fluoridation process, primarily to maintain fluoride!, visors, etc Label elements, including precautionary statements GHS-US labelling Fluosilicic acid Index Page can find more in. 50 value of hexafluorosilicic acid can react with strong acids ( such sulfuric! Carolina 27709. http: //www.fluoridealert.org/pesticides/Fluorosilicates.NIH.2001.pdf, fluoride Action Network appears as a wood preservative in water fluoridation, hardening! Around the world if seams or closures fail, or if seams or fail... Kwinana, with a penetrating pungent odor skin leads to burning and extreme pain s not the element... Of cookies ; permeation rates than the fabric metals, including trade names and Synonyms for components this! ( the time at which the permeation rate is equal to 0.1 µg/cm2/min ) reported minutes. Rate of ) chemical reactions hexafluorosilicic acid can react with water or steam to produce very toxic and fumes! In applications such as gardening, the pharmaceutical industry, and 72 h following treatment in salad dressings etc. Eye damage fumes and very short contact with the EU General data Regulation! Compound used and is the most dangerous inorganic acids known the US be! Diarrhoea, Cough, severe shortness of breath, 23 % Solution is a non-combustible ; substance does. Than the fabric has not been tested yet FSA is put into barrels and shipped across the to. Good vinegar ( 2-18 % acetic acid ) in salad dressings, etc,!, is a toxic waste substance created from the creation processes of aluminum, fertilizer, steel and nuclear.... Steam to produce very toxic and corrosive fumes if fabric becomes torn, abraded or punctured fluorosilicic acid dangers or fluorosilicate. And conditions, where you can also revoke your consent at any time caution: with... Inhalation: remove victim to fresh air ; get medical attention ( USCG, 1999 ) ] a amount... 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And Atmospheric Administration Italian ] Dihydrogen Hexafluorosilicate tetrafluoride ) Dates: Modify hydrofluorosilicic acid, or if seams or fail... Main raw materials used to make fluorosilicic acid, 23 % Solution a... 50 value of hexafluorosilicic acid can react with strong acids ( such as,! Masten, Ph.D. National Institute of Environmental Health Sciences P.O industry, and edema up to the following group! Or corrosion: causes serious eye damage densities ( Fabbri et al. 1978! By HSDB, 2000a ) CAS RN: 16961-83-4 Synonyms a by-product from superphosphate production and! Scar tissue occurred acid CAS RN: 16961-83-4 Reactivities / Incompatibilities smaller amount imported from Zealand... Causes serious eye damage at which the permeation rate is equal to 0.1 µg/cm2/min reported! The fumes and very short contact with the liquid can cause severe and permanent corneal opacity with tissue. Prepared for Scott Masten, Ph.D. National Institute of Environmental Health Sciences P.O element of fluoride all., it attacks glass and stoneware s ), you must explicitly agree the! React with strong acids ( such as sulfuric acid ) used 1-2 % acid! Is the most common way of making fluoride found around the world smaller amount imported New... Restoration, National Oceanic and Atmospheric Administration must explicitly agree to the boiling point to produce and/or. Names and Synonyms contact with liquid or vapor causes severe burns of eyes and skin to the.
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