Potassium Tetraborate
Potassium tetraborate is an inorganic salt used as a boron source in welding fluxes and ceramics. It is classified in HTS 2840.20.00.00 as other borates, distinct from sodium borates. This compound appears as a white powder soluble in water.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If prepared as pickling preparation
Borates specifically for metal pickling classify under Chapter 38 preparations.
If in perborate form
Peroxoborates (perborates) are specifically excluded and classified separately.
If crude or unrefined grade
Natural or felspar borates classify as fluxes in Chapter 25.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Submit chemical composition analysis to prove potassium borate identity
• Check REACH-like compliance for EU-origin goods transshipping to US
• Label as 'not for food use' to prevent misimport as additive
Related Products under HTS 2840.20.00.00
Sodium Tetraborate Decahydrate (Borax)
Sodium tetraborate decahydrate, commonly known as borax, is a hydrated sodium borate salt used in detergents, glass manufacturing, and as a flux. It falls under HTS 2840.20.00.00 as 'other borates' since it is a chemically defined inorganic borate compound excluding peroxoborates. This white crystalline powder is essential in cleaning products and metallurgy.
Disodium Tetraborate Anhydrous
Disodium tetraborate anhydrous is a dehydrated form of borax used in industrial applications like enamel frits and herbicides. Classified under HTS 2840.20.00.00 as other borates, it is a pure inorganic sodium borate meeting Chapter 28 definitions. This powder provides boron source in metallurgy and agriculture.
Ammonium Pentaborate Solution
Ammonium pentaborate solution (20-40% concentration) serves as a fire retardant and boron supplement in agriculture. Under HTS 2840.20.00.00 as other borates, it qualifies as chemically defined per Chapter 28/29 notes despite solution form. Used in wood treatment and fertilizers.
Zinc Borate Powder (2ZnO·3B2O3·3.5H2O)
Zinc borate (2ZnO·3B2O3·3.5H2O) is a flame retardant and smoke suppressant used in plastics and textiles. Classified as other borates under HTS 2840.20.00.00 as a metal borate salt per heading applicability. Fine white powder with specific hydrate formula.
Magnesium Borate Hydrate
Magnesium borate hydrate serves as a lubricant additive and anti-corrosion agent. It falls under HTS 2840.20.00.00 as other borates, being a chemically defined inorganic magnesium salt. Used in drilling fluids and ceramics.
Calcium Borate Precipitate
Calcium borate precipitate is used in specialty ceramics and as a boron supplement. Classified under HTS 2840.20.00.00 as other borates, excluding Chapter 31 products. Fine particulate form for high-purity applications.