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Uses and synthesis of Sodium hydrogen difluoride powderSodium hydrogen difluoride Raw Materials is white crystalline powder, soluble in water, aqueous solution is acidic, can corrode glass. Sodium hydrogen difluoride powder is used as antiseptic, food preservative, also used for etching glass, tin plate manufacturing, fabric treatment, rust removal.
Sodium hydrogen difluoride CAS 1333-83-1 is used as food preservative, animal specimen and anatomical specimen preservative and antiseptic.
Colorless or white quicksand crystalline powder.Sodium hydrogen difluoride CAS 1333-83-1 has strong acidic odor. Sodium hydrogen difluoride powder is soluble in water, insoluble in alcohol.
Functions of Sodium hydrogen difluoride powder
Cleaning agent: Used to clean dirt and oxides from the surface of glass, metal and other materials. Often used to remove weld oxide scale after stainless steel welding.Etching agent: Used to etch glass and semiconductor materials.
Flux: Used for welding and brazing.
Other applications: Used to prepare other fluorides, wood antiseptic, etc.
Physicochemical Property of Sodium hydrogen difluoride powder
Colorless or white quicksand crystalline powder.Sodium hydrogen difluoride Raw Materials has a strong acidic odor. Soluble in water, insoluble in alcohol.
production methodprocess of Sodium hydrogen difluoride powder
Neutralization methodIn a plastic reactor, measure and input 40% hydrofluoric acid, and cool with ice or cold water outside the reactor to maintain the reaction temperature below 5℃. Under stirring, slowly add the filtered saturated soda ash solution in a fine stream, and neutralize it until the Congo red paper is just red. Then cooling, vacuum suction filtration, with a very small amount of water to wash the crystals to remove free acid, and then centrifugal separation, drying at 80 ℃, crushed to produce Sodium hydrogen difluoride Raw Materials. 4HF + Na2CO3 → 2NaHF2 + H20 + CO2↑
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