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What is the function of ammonium hydrogen fluoride
info：www.hongjiafu.net | Release time：2025-12-11
Ammonium hydrogen fluoride (NH ₄ HF ₂) is a white crystal, also known as acid ammonium fluoride. Due to its mild release of hydrogen fluoride (HF) and strong acidic and fluorinating properties, it is a key fluoride chemical in industry.
Its core role mainly focuses on the following five areas:
1、 Glass Industry: Etching and Finishing Processes
As a glass etchant (often mixed with hydrofluoric acid), it is one of its better uses.
Principle: Corrosion of silicon dioxide (SiO ₂) in glass to achieve controllable patterns, extinction, or frosted effects.
Application:
Craft glass: carving, engraving, and sanding of glassware and crafts.
Optical glass: precision etching and cleaning of optical lenses, prisms, and fibers.
Photovoltaic/display glass: Etching TCO conductive film to prepare anti reflection layer, improving the photoelectric performance of solar panels and LCD panels.
2、 Electronic Semiconductors: Cleaning and Etching Processes
Electronic grade ammonium hydrogen fluoride is a core wet chemical used in semiconductor manufacturing.
Silicon wafer processing: Selective removal of oxide layer (SiO ₂), contaminated particles, and photoresist residue on the surface of silicon wafers, which is an essential cleaning agent for the pre fabrication process of wafer manufacturing.
PCB manufacturing: used for acid etching of printed circuit boards (PCBs) to create circuit graphics.
Precision cleaning: Clean fiber optic connectors and electronic components to ensure high surface cleanliness.
3、 Metal surface treatment: rust removal, film formation, and brightening
Aluminum/aluminum alloy treatment: Remove the oxide film on the surface of aluminum profiles, while forming a dense fluorine conversion film, significantly improving corrosion resistance and spray adhesion.
Stainless steel/titanium alloy treatment: acid pickling and passivation to remove oxide scale, rust, and scale, used for precision treatment of aviation and automotive components.
Electroplating additives: added to chrome plating and zinc plating electrolytes to activate the metal surface, making the coating more uniform and firm.
4、 Petrochemical and synthesis: catalysts and fluorine sources
Fluorination reagent: As a mild fluorine source, it is used in organic synthesis to prepare fluorine-containing intermediates in pharmaceuticals, pesticides, and dyes.
Catalyst: Used as a catalyst component for alkylation and isomerization reactions in petroleum refining.
Synthetic raw materials: Production of cryolite (electrolytic aluminum), potassium fluoride, aluminum fluoride and other fluorides.
Oilfield acidification: Prepare "soil acid" to acidify sandstone formations, dredge reservoir pores, and improve oil recovery rate.
5、 Other industrial auxiliary functions
Boiler cleaning: Remove silicate scale from boilers and pipelines.
Ceramic industry: As a flux, it reduces the sintering temperature of ceramics, improves density and glossiness.
Analytical reagents: Masking agents used in chemical analysis.
Rare earth smelting: efficient leaching and extraction of rare metals such as rare earths, beryllium, cobalt, etc
Its core role mainly focuses on the following five areas:
1、 Glass Industry: Etching and Finishing Processes
As a glass etchant (often mixed with hydrofluoric acid), it is one of its better uses.
Principle: Corrosion of silicon dioxide (SiO ₂) in glass to achieve controllable patterns, extinction, or frosted effects.
Application:
Craft glass: carving, engraving, and sanding of glassware and crafts.
Optical glass: precision etching and cleaning of optical lenses, prisms, and fibers.
Photovoltaic/display glass: Etching TCO conductive film to prepare anti reflection layer, improving the photoelectric performance of solar panels and LCD panels.
2、 Electronic Semiconductors: Cleaning and Etching Processes
Electronic grade ammonium hydrogen fluoride is a core wet chemical used in semiconductor manufacturing.
Silicon wafer processing: Selective removal of oxide layer (SiO ₂), contaminated particles, and photoresist residue on the surface of silicon wafers, which is an essential cleaning agent for the pre fabrication process of wafer manufacturing.
PCB manufacturing: used for acid etching of printed circuit boards (PCBs) to create circuit graphics.
Precision cleaning: Clean fiber optic connectors and electronic components to ensure high surface cleanliness.
3、 Metal surface treatment: rust removal, film formation, and brightening
Aluminum/aluminum alloy treatment: Remove the oxide film on the surface of aluminum profiles, while forming a dense fluorine conversion film, significantly improving corrosion resistance and spray adhesion.
Stainless steel/titanium alloy treatment: acid pickling and passivation to remove oxide scale, rust, and scale, used for precision treatment of aviation and automotive components.
Electroplating additives: added to chrome plating and zinc plating electrolytes to activate the metal surface, making the coating more uniform and firm.
4、 Petrochemical and synthesis: catalysts and fluorine sources
Fluorination reagent: As a mild fluorine source, it is used in organic synthesis to prepare fluorine-containing intermediates in pharmaceuticals, pesticides, and dyes.
Catalyst: Used as a catalyst component for alkylation and isomerization reactions in petroleum refining.
Synthetic raw materials: Production of cryolite (electrolytic aluminum), potassium fluoride, aluminum fluoride and other fluorides.
Oilfield acidification: Prepare "soil acid" to acidify sandstone formations, dredge reservoir pores, and improve oil recovery rate.
5、 Other industrial auxiliary functions
Boiler cleaning: Remove silicate scale from boilers and pipelines.
Ceramic industry: As a flux, it reduces the sintering temperature of ceramics, improves density and glossiness.
Analytical reagents: Masking agents used in chemical analysis.
Rare earth smelting: efficient leaching and extraction of rare metals such as rare earths, beryllium, cobalt, etc
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