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What is potassium tetraborate briefly introduced
info：www.hongjiafu.net | Release time：2026-07-23
1、 Basic physical and chemical properties
The appearance is white crystals or crystalline powder; Easy to dissolve in water, slightly soluble in alcohol, the aqueous solution is weakly alkaline (pH ≈ 9.2 in 2% aqueous solution), and has excellent buffering capacity; The melting point of anhydrous material is 815 ℃, and metal oxides can be melted and dissolved at high temperatures.
Core advantage: It does not contain sodium ions and has better water solubility than borax (sodium tetraborate). It is an alternative raw material for borax under sodium sensitive conditions.
2、 Core application areas
Metallurgical welding (highly relevant to the wire industry)
Used as a brazing flux for stainless steel, non-ferrous metals, and copper welding; High temperature removal of metal surface oxide film enhances weld wettability and avoids welding spatter and surface white spots caused by sodium salts.
Lubricating oil extreme pressure anti-wear additive
The in-situ generation of dense borate protective film at the friction interface has strong load-bearing capacity and corrosion inhibition effect, and is widely used in gear oil and metalworking fluids.
chemical analysis
Acid base titration primary reference substance, also used as electrophoresis and laboratory buffer system.
other industries
Disinfectant raw materials, diazo developer components, flame retardant additives; It can also be used for water treatment corrosion inhibition and agricultural antibacterial treatment.
3、 Key selection characteristics
Sodium free borate system, eliminating sodium ion pollution;
The pH of the aqueous solution is stable and the buffering performance is excellent;
High temperature has the ability to melt metal oxide layers;
Avoid mixing with strong acids for storage; Under normal conditions, the property is stable and stored in a sealed and dry manner.
The appearance is white crystals or crystalline powder; Easy to dissolve in water, slightly soluble in alcohol, the aqueous solution is weakly alkaline (pH ≈ 9.2 in 2% aqueous solution), and has excellent buffering capacity; The melting point of anhydrous material is 815 ℃, and metal oxides can be melted and dissolved at high temperatures.
Core advantage: It does not contain sodium ions and has better water solubility than borax (sodium tetraborate). It is an alternative raw material for borax under sodium sensitive conditions.
2、 Core application areas
Metallurgical welding (highly relevant to the wire industry)
Used as a brazing flux for stainless steel, non-ferrous metals, and copper welding; High temperature removal of metal surface oxide film enhances weld wettability and avoids welding spatter and surface white spots caused by sodium salts.
Lubricating oil extreme pressure anti-wear additive
The in-situ generation of dense borate protective film at the friction interface has strong load-bearing capacity and corrosion inhibition effect, and is widely used in gear oil and metalworking fluids.
chemical analysis
Acid base titration primary reference substance, also used as electrophoresis and laboratory buffer system.
other industries
Disinfectant raw materials, diazo developer components, flame retardant additives; It can also be used for water treatment corrosion inhibition and agricultural antibacterial treatment.
3、 Key selection characteristics
Sodium free borate system, eliminating sodium ion pollution;
The pH of the aqueous solution is stable and the buffering performance is excellent;
High temperature has the ability to melt metal oxide layers;
Avoid mixing with strong acids for storage; Under normal conditions, the property is stable and stored in a sealed and dry manner.
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