Product classification
HS code for Anhydrous borax: 2840.11
Borates, disodium tetraborate (refined borax), anhydrous.
Classification of anhydrous borax under HS 2840.11
Anhydrous borax, chemically known as disodium tetraborate, is classified under Harmonized System (HS) code 284011. This classification is highly specific, as the HS description for this subheading explicitly identifies "Borates; disodium tetraborate (refined borax), anhydrous." Anhydrous borax is a refined form of borax from which the water of crystallization has been removed, resulting in a dehydrated product. It is a significant inorganic chemical used in various industries, including glass manufacturing, ceramics, detergents, and metallurgy, due to its fluxing and buffering properties. Its precise classification under 284011 underscores its chemical identity as a refined, water-free borate compound.
- Covers
- Disodium tetraborate, anhydrous
- Refined borax, anhydrous
- Borax glass (a fused, anhydrous form)
- Also under 2840.11
- Borax Anhydrous (Rio Tinto)
- US Borax Anhydrous
- Eti Maden Anhydrous Borax
Codes often confused with 2840.11
Common mistake. A primary source of misclassification for anhydrous borax is with other forms of refined borax. Specifically, HS 284019 covers "Other disodium tetraborate (refined borax)," which includes hydrated forms such as borax decahydrate (Na₂B₄O₇·10H₂O) and borax pentahydrate (Na₂B₄O₇·5H₂O). The crucial differentiator is the presence or absence of water of crystallization. Anhydrous borax (284011) is explicitly water-free. Another potential confusion point is with HS 252800, which covers "Natural borates and concentrates thereof." Anhydrous borax (284011) is a *refined* chemical product, not a raw natural mineral, distinguishing it from unprocessed natural borates.
Top exporters and importers of HS 284011 (the code used for anhydrous borax), 2025
In 2025, the largest exporter of HS 284011 (the code used for anhydrous borax) in UN Comtrade data was the United States, with 43% of world exports; the largest importer in UN Comtrade data was China, with 27% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 284011, not only anhydrous borax.
Top exporters 2025 · share of world exports
- 1 United States $42M 43% of world exports
- 2 Türkiye $40M 41% of world exports
- 3 Netherlands $10.0M 10% of world exports
World total: $96M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $26M 27% of world imports
- 2 Netherlands $12M 13% of world imports
- 3 Belgium $8.5M 9.0% of world imports
World total: $95M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for anhydrous borax
Brazil classifies anhydrous borax under NCM 2840.11.00: HS 2840.11 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about anhydrous borax
What is the HS code for Anhydrous borax?
The HS code for Anhydrous borax is 284011 (Borates; disodium tetraborate (refined borax), anhydrous). The HS code for Anhydrous borax is 284011. This code specifically covers disodium tetraborate (refined borax) in its anhydrous, or water-free, form.
How do I classify Anhydrous borax for customs?
Anhydrous borax is classified under HS code 284011 — Borates; disodium tetraborate (refined borax), anhydrous. This is a 6-digit subheading level code.
How does anhydrous borax differ from other forms of refined borax in HS classification?
Anhydrous borax (284011) is the water-free form of disodium tetraborate. Other refined borax forms, such as borax decahydrate or pentahydrate, contain water of crystallization and are classified under HS 284019. The presence or absence of water is the defining characteristic for classification within these subheadings.
Which countries are the top exporters of anhydrous borax (HS 284011)?
In 2025, the top exporters of HS 284011 (the code used for anhydrous borax) in UN Comtrade data were the United States ($42M, 43% of world exports), Türkiye ($40M) and the Netherlands ($10.0M). World exports came to about $96M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of anhydrous borax (HS 284011)?
In 2025, the top importers of HS 284011 (the code used for anhydrous borax) in UN Comtrade data were China ($26M, 27% of world imports), the Netherlands ($12M) and Belgium ($8.5M). World imports came to about $95M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Anhydrous borax the same in all countries?
The base HS code 284011 for Anhydrous borax is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for anhydrous borax in Brazil?
In Brazil, anhydrous borax (HS 284011) is classified under NCM 2840.11.00.