HTS 2528
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 percent of H3BO3 calculated on the dry weight
| Code | Description | Unit | General | Special | Column 2 | Source |
|---|---|---|---|---|---|---|
| 2528.00.00 | 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 percent of H3BO3 calculated on the dry weight | Free | Free | USITC | ||
| 2528.00.00.05 | Natural sodium borates and concentrates thereof (whether or not calcined) | kg | Free | Free | USITC | |
| 2528.00.00.10 | Natural calcium borates | kg | Free | Free | USITC | |
| 2528.00.00.50 | Other | kg | Free | Free | USITC |
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Source: USITC, Harmonized Tariff Schedule of the United States – 2026 HTS Revision 20, effective 28 September 2026. Heading 2528 at USITC
Not shown: the additional duties of Chapter 99 (such as Section 301 and Section 232), anti-dumping and countervailing duties, quotas and the legal notes.
This page is general information, not legal advice and not a classification decision. Tariff texts and rates change: check the publisher's current schedule, and ask the customs authority for a binding ruling where the answer matters.
All headings of chapter 25: Salt; sulfur; earths and stone; plastering materials, lime and cement