Share:

Refined Kernite Borate Granules

Granulated concentrate from kernite ore for agricultural boron supplements. Under HTS 2528.00.0005 as natural sodium borate concentrate suitable for calcining if needed. Granules ensure even soil distribution.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

3105.30.00.00Lower: 25% vs 35%

If diammonium phosphate blended

Fertilizer mixtures with nitrogen/phosphorus classify under Chapter 31.

2840.20.00.00Higher: 38.7% vs 35%

If decahydrate borax form

Specific hydrated synthetic borax subheadings in Chapter 28.

2530.90Lower: 10% vs 35%

If impure with chlorites

Impure borates with other minerals may go to heading 2530.

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

Soil test compatibility docs required; label for fertilizer use restrictions

Granule uniformity prevents segregation in transit

Related Products under HTS 2528.00.00.05

Calcined Ulexite Ore Concentrate

Ulexite is a natural sodium calcium borate mineral concentrated and calcined for industrial use in glass and ceramics production. It falls under HTS 2528.00.0005 as a natural sodium borate concentrate that has been calcined, excluding borates separated from brine. This form enhances solubility for manufacturing applications.

Kernite Sodium Borate Concentrate

Kernite is a naturally occurring sodium borate mineral (Na2B4O7·4H2O) mined and concentrated for use in detergents and agriculture. Classified under HTS 2528.00.0005 as a natural sodium borate concentrate, not derived from brine separation. It provides a key source of boric oxide for various industries.

Uncalcined Borax Ore (Tincal)

Tincal, or natural crude borax, is a sodium borate mineral concentrate extracted from evaporated lake deposits and used in metallurgy. It qualifies for HTS 2528.00.0005 as an uncalcined natural sodium borate concentrate from non-brine sources. This form is valued for its fluxing properties in welding.

Calcined Sodium Borate Flux Grade

This calcined concentrate of natural sodium borates is processed for use as a flux in glassmaking and enameling industries. HTS 2528.00.0005 covers it explicitly as calcined natural sodium borates from mineral sources, not brine. It lowers melting points in high-temperature applications.

Natural Sodium Borate Powder (Concentrate)

Fine-ground concentrate from natural sodium borate ores, suitable for ceramic glazes and herbicides. Classified in HTS 2528.00.0005 for natural sodium borates whether calcined or not, provided not from separated brine. Particle size controlled for uniform dispersion in formulations.

Ulexite Sodium Borate Lumps

Lump-form concentrate of ulexite, a fibrous sodium borate mineral used in fiberglass production. Falls under HTS 2528.00.0005 as natural sodium borate not separated from brine, in minimally processed lump state. Ideal for controlled dissolution in manufacturing.