Natural barium sulfate — HTS 2511
Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816
Chapter 25 › Heading 2511
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 2511 covers certain naturally occurring barium minerals: natural barium sulfate, commonly called barytes or barite, and natural barium carbonate, commonly called witherite. The heading can include these materials whether or not they have been calcined (heat-treated). It does not cover barium oxide, which is classified in heading 2816.
This is a 4-digit product category, not usually the final code used for entry. To narrow it to an 8-digit subheading, identify the material and the applicable product description—typically whether it is natural barium sulfate or natural barium carbonate, along with any further distinctions shown in the current HTS. Confirm the product’s physical form and processing against the legal notes and subheading wording; chemical composition and substantial processing may affect classification.
What to check
- Obtain the product’s technical specification or certificate of analysis and confirm whether the material is natural barium sulfate or natural barium carbonate.
- Check whether the product has been calcined and whether that treatment is addressed by the relevant subheading or legal notes.
- Verify that the product is not barium oxide or another chemically prepared barium compound covered elsewhere in the HTS.
- Review the current HTSUS subheading text, unit of quantity, and chapter or section notes before selecting the 8-digit code.
- Ask a customs broker or request a binding classification ruling if the material is chemically treated, blended, converted into a preparation, or otherwise difficult to distinguish.
HTS heading 2511 summary
Natural barium sulfate is a 4-digit product category containing 1 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 2511.10 | Natural barium sulfate (barytes) |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 2511.20.00.00 👉 | Natural barium carbonate (witherite) | Free | — | 30% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 2511?
Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.