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Borates; peroxoborates (perborates): > Disodium tetraborate (refined borax): > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified 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.
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.
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).
Refined Borax Decahydrate USP Grade
Although decahydrate has its subheading, this USP variant with specific impurities control is 'other' refined borax under HTS 2840.19.00.00 for pharma/lab use. Chemically defined borate excluding Chapter 31 products per note 6(c).