Refined Borax Granules for Glass Production
Granular refined disodium tetraborate optimized for fiberglass and glass flux applications. Falls under HTS 2840.19.00.00 as other refined borax, a chemically defined inorganic salt per Chapter notes. Not a luminophore or graphite product excluded by note 6.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as complex borate salt
Double or complex salts of boric acid may go to 2836 per notes on metal salts.
If powdered for glass frit preparation
Borates processed into glass frit powder fall under Chapter 32 as prepared pigments.
If industrial blends with silicates
Mixtures for glassmaking preparations are 3824, excluding pure refined borax.
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Import Tips & Compliance
• Specify granule size and B2O3 assay in invoices for glass-grade verification
• Pitfall: Granules mistaken for fertilizers under 3105
• Ensure no organic admixtures per note 6(b)
Related Products under HTS 2840.19.00.00
Refined Anhydrous Borax (Na2B4O7)
Refined anhydrous borax, also known as anhydrous sodium tetraborate, is a white, odorless powder used in glass manufacturing and as a cleaning agent. It falls under HTS 2840.19.00.00 as 'other' disodium tetraborate (refined borax) that is not the decahydrate form. This chemically defined inorganic compound meets Chapter 28 criteria for borates.
Refined Borax Pentahydrate
Borax pentahydrate (Na2B4O7·5H2O) is a refined crystalline form of disodium tetraborate used in detergents and herbicides. Classified under HTS 2840.19.00.00 as 'other' refined borax beyond the standard decahydrate. It qualifies as a chemically defined borate per Chapter 28 notes.
Technical Grade Refined Borax Powder
Technical grade refined borax is a high-purity disodium tetraborate powder for industrial flux in metallurgy and welding. It is classified in HTS 2840.19.00.00 as other refined borax forms. Excludes organo-inorganic compounds per Chapter 28 note 2.
Pharmaceutical Grade Refined Borax
USP-grade refined disodium tetraborate for use in pharmaceutical buffers and eye washes. Classified under HTS 2840.19.00.00 as other refined borax, meeting chemical purity standards of Chapter 28. Excludes isotopes or radioactive compounds per note 5.
Refined Borax for Laundry Detergents
Bulk refined borax powder (Na2B4O7) used as a builder in laundry detergent formulations. HTS 2840.19.00.00 covers this as other disodium tetraborate refined borax. Pure inorganic compound, not a retail preparation.
High-Purity Refined Borax for Metallurgy
High-purity refined disodium tetraborate used as flux in non-ferrous metal soldering and brazing. Under HTS 2840.19.00.00 as other refined borax, chemically defined per Chapter 28. Not a cermet or sintered carbide excluded by note 6(g).