What is fluorosilicic acid used for?
What is fluorosilicic acid used for?
Silicofluoric Acid is a fuming, colorless to pale, straw-colored liquid with a sharp, irritating odor. It is used in water fluoridation, metal sterilization, electroplating, animal hide tanning, and glass etching.
What is FSA acid?
Hexafluorosilicic acid (H2SiF6 or FSA) is a hazardous and corrosive byproduct of the production of hydrogen fluoride (HF) and phosphate-containing fertilizers.
Is fluorosilicic acid flammable?
ICSC 1233 – FLUOROSILICIC ACID. Not combustible. Gives off irritating or toxic fumes (or gases) in a fire. In case of fire in the surroundings, use appropriate extinguishing media.
What is used to fluoridate water?
The three main fluoride compounds generally used to fluoridate water are: sodium fluoride, hydrofluorosilicic acid (hexafluorosilicic acid) and sodium silicofluoride. All these fully mix (dissociate) in water, resulting in the availability of fluoride ions to prevent tooth decay.
What is the application of Hexafluorosilicic acid?
The potassium salt, Potassium fluorosilicate, is used in the production of porcelains, the magnesium salt for hardened concretes and as an insecticide, and the barium salts for phosphors. Hexafluorosilicic acid is also used as an electrolyte in the Betts electrolytic process for refining lead.
Why is fluoride used in water treatment?
The goal of water fluoridation is to prevent tooth decay by adjusting the concentration of fluoride in public water supplies. Tooth decay (dental caries) is one of the most prevalent chronic diseases worldwide.
What is industrial fluoride used for?
1.2 What are fluorides used for in industry? Fluorides are important industrial chemicals with a number of uses but the largest uses are for aluminium production, drinking water fluoridation and the manufacture of fluoridated dental preparations.
Where does fluorosilicic acid come from?
Hydrofluorosilicic acid is a chemical often known by other names like fluorosilicic acid and fluosilicic acid. It’s often abbreviated to HSA or FSA. The acid is a colorless chemical that is created when you take phosphoric rock from the ground and convert it to soluble fertilizer.
How do you make fluorosilicic acid?
Sources of Fluoride Additives It is refluxed (heated) with sulfuric acid to produce a phosphoric acid-gypsum (calcium sulfate-CaSO4) slurry. The phosphoric and fluoride gases that are released in the process are then separated. The fluoride gas is captured and used to create fluorosilicic acid.
More… Fluorosilicic acid appears as 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.
How much does 23% fluorosilicic acid weigh?
A 23% fluorosilicic acid water solution weighs 10.2 pounds per gallon at 60ºF, and has a fluoride (F) content of 17.41%. UN NO. -Fluorosilicic Acid is available generally as a 20 to 40 percent aqueous solution. – 60-70% solution will be solidified at 19 C to form a dihydrate crystalline.
How do you stop fluorosilicic acid fumes from leaking?
Small Leaks Fluorosilicic acid fumes: Increase ventilation and allow fumes to vent to a safe area Fluorosilicic acid liquid: If possible contain the surface area of a spill by bunding with sand, earth or vermiculite. Dilute spill with water, then neutralise with lime or soda ash to pH 6 to 10. Prevent run-off into drains and waterways.
What is the molecular weight of hexafluorosilicic acid?
Hexafluorosilicic acid PubChem CID 21863527 Synonyms Hexafluorosilicic acid Fluorosilicic aci Molecular Weight 144.091 Component Compounds CID 783 (Hydrogen) CID 28117 (Hexafluoro Date s Modify 2021-07-03 Create 2007-12-05
