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In which industries is sodium hydrogen fluoride used
info：www.hongjiafu.net | Release time：2026-08-04
Sodium hydrogen fluoride is an acidic fluoride salt that can smoothly release fluoride ions and has the characteristics of acidic etching, complex rust removal, and melting aid; Compared to liquid hydrofluoric acid, solid form is more convenient for storage and transportation, and is widely used as an etchant, metal surface treatment agent, fluorine chemical intermediate, and welding melting aid raw material.
1、 Glass processing industry (core application areas)
1. Etching and sanding of architectural glass and craft glass
Used for etching patterns and marking scales on tempered frosted glass, decorative glass, and glassware; Mix sandblasting paste to achieve a translucent and non transparent matte effect, widely used in door and window glass, bathroom glass, and craft glass bottles.
2. Optical glass and lens processing
Matte treatment on the surface of optical lenses, etching before polishing, and fine-tuning of light transmission performance; Scale processing of instrument glass and experimental glass.
3. Stone and ceramic cleaning
Clean the surface scale, silicate stains, and weathered layer of stone and ceramic tiles.
2、 Metal surface treatment, machining and welding industry
1. Aluminum processing (aluminum profiles, aluminum plates)
Remove natural oxide film before anodizing, matte sandblasting treatment for aluminum alloy, and chemical polishing agents; Remove surface oil stains and oxide layers to ensure adhesion during subsequent spraying and oxidation.
2. Pickling and rust removal of steel and stainless steel
Remove rust, heat-treated oxide scale, and welding spots from the workpiece; Pre treatment of workpiece activation before electroplating.
3. Special metal etching
Silicon and titanium alloy etching (titanium etching requires the use of oxidants to prevent hydrogen embrittlement); Tinplate electroplating production additive.
4. Welding industry
Compound with potassium hydrogen fluoride to produce welding flux and electrode coating raw materials; Dissolve the oxide film on the metal surface during the welding process to avoid porosity and virtual welding in the weld seam, used for brazing, silver welding, and non-ferrous metal brazing.
3、 Electronics and Semiconductor Industry
1. Silicon wafer pretreatment
Mild etching of silicon wafer oxide layer, surface cleaning of wafer to remove surface oxide impurities;
2. PCB circuit board auxiliary cleaning
Partial process to remove silicon pollutants on the surface of the board;
3. Etching and cleaning of glass bases for optoelectronic components.
4、 Fluorine chemical basic raw material industry
Heating decomposition to prepare anhydrous hydrogen fluoride (HF) as an upstream raw material in the fluoroplastic, fluororubber, and refrigerant industry chains;
Synthesis of various fluorides: aluminum fluoride, cryolite, fluoroborate, high-purity sodium fluoride;
Fluorine source and catalyst for organic synthesis fluorination reaction.
5、 Metallurgical industry
Beryllium metal refining and purification;
Nonferrous metal smelting impurity removal and mineral sand beneficiation additives;
Preparation of Fluorine Salt Raw Materials for Aluminum Electrolysis.
6、 Textile and leather industries
Acid washing of textiles, insect and moth prevention treatment of fabrics;
Leather tanning agents, leather insect and anti-corrosion agents;
Note: Environmental control measures are becoming stricter, and the usage in this field is decreasing year by year.
7、 Other niche industrial uses
Specimen preservative (for anatomical and biological specimens);
Casting industry modeling, sand mold additives;
Industrial cleaning agent raw materials, preparing silicate scale cleaning agent;
1、 Glass processing industry (core application areas)
1. Etching and sanding of architectural glass and craft glass
Used for etching patterns and marking scales on tempered frosted glass, decorative glass, and glassware; Mix sandblasting paste to achieve a translucent and non transparent matte effect, widely used in door and window glass, bathroom glass, and craft glass bottles.
2. Optical glass and lens processing
Matte treatment on the surface of optical lenses, etching before polishing, and fine-tuning of light transmission performance; Scale processing of instrument glass and experimental glass.
3. Stone and ceramic cleaning
Clean the surface scale, silicate stains, and weathered layer of stone and ceramic tiles.
2、 Metal surface treatment, machining and welding industry
1. Aluminum processing (aluminum profiles, aluminum plates)
Remove natural oxide film before anodizing, matte sandblasting treatment for aluminum alloy, and chemical polishing agents; Remove surface oil stains and oxide layers to ensure adhesion during subsequent spraying and oxidation.
2. Pickling and rust removal of steel and stainless steel
Remove rust, heat-treated oxide scale, and welding spots from the workpiece; Pre treatment of workpiece activation before electroplating.
3. Special metal etching
Silicon and titanium alloy etching (titanium etching requires the use of oxidants to prevent hydrogen embrittlement); Tinplate electroplating production additive.
4. Welding industry
Compound with potassium hydrogen fluoride to produce welding flux and electrode coating raw materials; Dissolve the oxide film on the metal surface during the welding process to avoid porosity and virtual welding in the weld seam, used for brazing, silver welding, and non-ferrous metal brazing.
3、 Electronics and Semiconductor Industry
1. Silicon wafer pretreatment
Mild etching of silicon wafer oxide layer, surface cleaning of wafer to remove surface oxide impurities;
2. PCB circuit board auxiliary cleaning
Partial process to remove silicon pollutants on the surface of the board;
3. Etching and cleaning of glass bases for optoelectronic components.
4、 Fluorine chemical basic raw material industry
Heating decomposition to prepare anhydrous hydrogen fluoride (HF) as an upstream raw material in the fluoroplastic, fluororubber, and refrigerant industry chains;
Synthesis of various fluorides: aluminum fluoride, cryolite, fluoroborate, high-purity sodium fluoride;
Fluorine source and catalyst for organic synthesis fluorination reaction.
5、 Metallurgical industry
Beryllium metal refining and purification;
Nonferrous metal smelting impurity removal and mineral sand beneficiation additives;
Preparation of Fluorine Salt Raw Materials for Aluminum Electrolysis.
6、 Textile and leather industries
Acid washing of textiles, insect and moth prevention treatment of fabrics;
Leather tanning agents, leather insect and anti-corrosion agents;
Note: Environmental control measures are becoming stricter, and the usage in this field is decreasing year by year.
7、 Other niche industrial uses
Specimen preservative (for anatomical and biological specimens);
Casting industry modeling, sand mold additives;
Industrial cleaning agent raw materials, preparing silicate scale cleaning agent;
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