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Uses and synthesis of Ammonium hydrogen difluoride powder

Ammonium hydrogen difluoride powder is an inorganic compound, the chemical formula is NH4HF2, for the white or colorless transparent rhombohedral crystal system crystals, Ammonium hydrogen difluoride CAS 1341-49-7 flakes, slightly acidic, corrosive, easy to deliquesce, the Ammonium hydrogen difluoride Raw Materials Soluble in water as a weak acid, soluble in water, slightly soluble in ethanol, decomposed by heat or in hot water.

Ammonium hydrogen difluoride powder is mainly used as etching agent for engraved glass, anticorrosive agent, disinfectant, solvent for beryllium oxide to make beryllium metal, analytical reagent and surface treatment agent for siliceous steel plate, Ammonium hydrogen difluoride CAS 1341-49-7 is also used in the manufacture of ceramics and aluminum-magnesium alloy. Ammonium hydrogen difluoride CAS 1341-49-7 is also used as oxidizing agent for manufacturing ceramics and aluminum-magnesium alloy, as cleaning agent for boiler feed water system steam generator, as fluoride agent for organic synthesis, as electroplating solution, and as reagent for extracting rare elements.

Applications / Functions of Ammonium hydrogen difluoride powder

1. Ammonium hydrogen difluoride CAS 1341-49-7 Used as glass etchant, disinfectant, antiseptic, solvent of beryllium metal, surface treatment agent of silicon steel plate, also used in the manufacture of ceramics and magnesium alloy.
2. Ammonium hydrogen difluoride powder can be used as chemical reagent, glass etchant (often used with hydrofluoric acid), disinfectant and antiseptic in fermentation industry, solvent of beryllium metal from beryllium oxide, and surface treatment agent of silicone steel plate.Ammonium hydrogen difluoride Raw Materials also Ammonium hydrogen difluoride Raw Materials is also used in the manufacture of ceramics, magnesium alloys, cleaning and descaling of boiler feed water systems and steam generating systems, and acidification of oil field sand and gravel. Also used as catalyst component for alkylation and isomerization.
3. Ammonium hydrogen difluoride Raw Materials used as glass matting, frosting, etching agent, used as wood protection agent, aluminum brightening agent, textile industry as a rust remover, but also can be used in electroplating, electronics industry, as an analytical reagent.
4. Ammonium hydrogen difluoride Raw Materials Used as analytical reagent and bacterial inhibitor
5. Ammonium hydrogen difluoride powder is used in ceramics and glass surface engraving. Sterilization of utensils. Ammonium hydrogen difluoride powder is used in ceramics and glass surface skeletonization. Electroplating.

Physicochemical Property of Ammonium hydrogen difluoride powder

Ammonium hydrogen difluoride powder is also known as acid ammonium fluoride. Chemical formula NH4F-HF, molecular weight 57.04, white deliquescent hexagonal crystal, toxic. Easily deliquescent. Relative density 1.50, melting point 125.6℃, refractive index 1.390, can sublimate, corrosive to glass, decompose by heat or hot water.Ammonium hydrogen difluoride CAS 1341-49-7 Soluble in water, slightly soluble in alcohol. Aqueous solution is strongly acidic, can corrode glass, corrosive to skin. Pass gaseous ammonia into 40% of hydrofluoric acid and precipitate crystals by cooling.

Preparation: 1 mole of ammonia to absorb 2 moles of hydrogen fluoride, then cooling, concentration, crystallization and Ammonium hydrogen difluoride CAS 1341-49-7.

Uses: Used as chemical reagent, pottery and glass etching, electroplating, brewing industry, fermentation industry antiseptic and bacterial inhibitor. Also used in metal beryllium smelting and ceramics manufacturing.

White or colorless transparent rhombohedral crystal system, Ammonium hydrogen difluoride Raw Materials is in the form of flakes, slightly acidic odor. Slightly soluble in alcohol, very soluble in cold water, decomposed in hot water. Strongly acidic when dissolved in water.

production methodprocess of Ammonium hydrogen difluoride powder

Neutralization method in lead or plastic containers, quantitatively pass anhydrous hydrofluoric acid, mixed with the circulating mother liquor, in the jacket of the container with cold water cooling, and then slowly, intermittently with fine flow of liquid ammonia and constantly stirring, so as to make it fully reacted. Measure with Congo red reagent at any time during the operation, until the reagent is just brown for the end point, stop the liquid ammonia. The reaction solution was evaporated and concentrated until the liquid surface showed a crystalline film, then cooled and crystallized, centrifuged and separated to produce Ammonium hydrogen difluoride Raw Materials with NH3+2HF→NH4HF2.

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