HS Code 2528Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 % of h3bo3 calculated on the dry weight
1 six-digit code · Heading 27 of 29 in Chapter 25 · World Customs Organization Harmonized System
HS code 2528 is the customs heading for natural borates, borate concentrates and low-strength natural boric acid. Use this page to check what fits, what does not, and where to look for trade records.
Heading 2528does not subdivide further in the WCO nomenclature: goods answering to “Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 % of h3bo3 calculated on the dry weight” classify at the single six-digit code 252800. The heading is number 27 of 29 in Chapter 25, Salt; sulphur; earths, stone; plastering materials, lime and cement, which runs to 67 six-digit codes in all.
Six-digit codes under heading 2528
| HS Code | Import–export description |
|---|---|
| 252800 | Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 % of h3bo3 calculated on the dry weight |
What HS code 2528 covers
A heading is a customs label. Traders and border officers use it to name one group of goods. This one names natural borates and their concentrates. Borates are minerals that contain boron. A concentrate is a borate product that has been processed to hold more of the useful mineral. It may be calcined, which means heated, or it may not.
The heading also takes in natural boric acid, but only up to a strength limit. You may also see this searched as the HSN code 2528. It is the same tariff heading.
The word natural matters. This heading is about goods taken from the ground, not goods made in a chemical plant. Keep that in mind when you pick a code for your own shipment.
Which HS code is used for natural boric acid and borates?
Both goods go under 252800. Write it on your invoice and packing list when the goods match the heading text. Calcined and uncalcined borates share the same code.
Many countries add more digits after the first six. Those extra digits belong to each national tariff, not to the World Customs Organization list. Duty and tax rates are set by each country too. Check the tariff of the country you ship to or from. The HS code classifier can help you test a product description.
What is excluded from heading 2528
The heading has clear limits. Goods outside them need a different code.
Two groups are left out:
- Borates separated from natural brine. If the borate was taken out of a brine, it is not in this heading.
- Natural boric acid that is stronger than the dry-weight limit above. It belongs elsewhere in the tariff.
How 2528 differs from nearby Chapter 25 headings
Chapter 25 holds many raw minerals, so mix-ups are common. Check the exact name of your goods first. A heading that names your product beats a general one.
These are the headings people most often confuse with borates:
- 2529: feldspar, leucite, nepheline and nepheline syenite, and fluorspar. These are different minerals.
- This is a catch-all. Borates are named in 2528, so they do not belong here.
- 2511: natural barium sulphate (barytes) and natural barium carbonate (witherite). A barium mineral is not a borate.
- 2510: natural calcium phosphates and phosphatic chalk. These are phosphate rocks.
Natural borates import and export data
EximDataX shows shipment-level import and export records from official customs sources. You can search by HS code to see who imports and exports a product.
Coverage: 43 direct customs feeds plus 184 mirror-derived countries. Named buyers and named suppliers are available in 38 of the 43 direct markets. Most markets refresh weekly and some refresh daily.
To work with natural borates, search by the code 252800. You can also book a free demo.
Related
- Chapter 25: salt, sulphur, earths and stone
- HS 2529 feldspar and fluorspar
- HS 2530 mineral substances n.e.s.
- HS 2511 natural barium sulphate
- HS 2510 natural calcium phosphates
- All HS code chapters
- Natural borates import data
- Natural borates export data
- Find natural borates buyers
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- HS code classifier
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Nearby headings in Chapter 25
- 2517Pebbles, gravel, crushed stone for concrete aggregates for road or railway…5 codes
- 2518Dolomite, whether or not calcined or sintered, including dolomite roughly…2 codes
- 2519Natural magnesium carbonate (magnesite); fused magnesia; dead-burned…2 codes
- 2520Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium…2 codes
- 2521Limestone flux; limestone and other calcareous stone, of a kind used for the…1 code
- 2522Quicklime, slaked lime and hydraulic lime; other than calcium oxide and…3 codes
- 2523Portland cement, aluminous cement (ciment fondu), slag cement, supersulphate…5 codes
- 2524Asbestos2 codes
- 2525Mica, including splittings; mica waste3 codes
- 2526Natural steatite; whether or not roughly trimmed or merely cut, by sawing or…2 codes
- 2529Feldspar; leucite; nepheline and nepheline syenite; fluorspar4 codes
- 2530Mineral substances not elsewhere specified or included3 codes
Who ships under 2528?
EximDataX tracks the live import–export records filed under this heading and the code beneath it: named buyers, suppliers, quantities and values from official customs feeds.
Section V: Mineral Products, chapters 25–27.
HS Code 2528: common questions
What is HS code 2528?
It also covers natural boric acid within a set H3BO3 strength limit. It belongs to Chapter 25.
What is the six-digit HS code for natural borates?
Use 252800. Your own country may add more digits for its national tariff.
Are borates separated from natural brine classified under 2528?
No. The heading text leaves out borates that were separated from natural brine. They need a different heading.
Which HS code covers natural boric acid?
Natural boric acid goes under 2528 when its H3BO3 content is within the dry-weight limit in the heading text. A stronger acid is outside this heading.
How can I find importers and exporters of natural borates?
Start with the code 252800. Then use the buyer data and supplier data pages, or ask for a demo on your own product.
See what your buyers are buying.Then decide.
Everything we show you comes from official customs filings — records, not claims. 30 minutes. Your shipment. Your HS code. Real platform. If you don’t see something new about your market by the end of the call, we walk away. No follow-ups.