High-Purity Anhydrous Sodium Tetraborate
High-purity anhydrous Na2B4O7 for laboratory reagents and pharmaceutical intermediates. It is classified in HTS 2840.11.00.00 as refined anhydrous disodium tetraborate, a chemically defined borate per Chapter 28 notes. Devoid of crystal water, distinguishing it from pentahydrate forms.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other borates or less refined
Non-anhydrous or impure disodium tetraborates go to other subheadings in 2840.19.
If diagnostic reagent grade with additives
Prepared reagents for lab analysis, even if borate-based, classify under 3822 per exclusions.
If containing heterocyclic hormones or derivatives
Organic borate complexes shift to Chapter 29 if meeting Note 1 criteria.
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Import Tips & Compliance
• Obtain Certificate of Analysis (CoA) specifying anhydrous purity >99% for customs validation
• Comply with REACH-like regulations if transshipping through EU; provide toxicity data
• Use proper NA/UN numbers for shipping as it may be regulated as an irritant
Related Products under HTS 2840.11.00.00
Anhydrous Disodium Tetraborate Powder
Pure anhydrous disodium tetraborate (Na2B4O7), also known as refined borax in its dehydrated form, used in industrial glass manufacturing and as a flux. It falls under HTS 2840.11.00.00 as it is specifically the anhydrous variant of disodium tetraborate without water of crystallization. This chemically defined inorganic borate compound is refined for high-purity applications.
Refined Anhydrous Borax Granules
Granular anhydrous disodium tetraborate (refined borax) for use in ceramic glazes and metallurgical fluxes. Classified under HTS 2840.11.00.00 due to its anhydrous nature and status as refined disodium tetraborate. Meets Chapter 28 definitions for chemically pure inorganic borates.
Industrial Grade Anhydrous Borax
Industrial anhydrous disodium tetraborate for enamel frits and soldering fluxes. Falls under HTS 2840.11.00.00 as refined anhydrous borax, explicitly covered in the subheading for peroxoborates and borates. Chemically defined without hydration.
Anhydrous Refrax Borax
"Refrax" brand anhydrous disodium tetraborate for fiberglass production. Classified under HTS 2840.11.00.00 as it is the anhydrous form of refined borax, a pure inorganic borate compound. Used where hydration would interfere with processes.
Pharma-Grade Anhydrous Tetraborate
Pharmaceutical-grade anhydrous disodium tetraborate for buffer solutions in drug manufacturing. HTS 2840.11.00.00 applies as refined anhydrous borax, chemically defined per Chapter 28. High purity ensures no water interference in formulations.
Technical Anhydrous Borax 99.5%
Technical-grade 99.5% anhydrous disodium tetraborate for welding fluxes. Under HTS 2840.11.00.00 as anhydrous refined borax, distinguished by lack of water molecules. Essential for high-temperature applications.