Chapter 25: Salt; sulfur; earths and stone; plastering materials, lime and cement
HTS heading 2512: Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an appa…
1 numbered line under heading 2512, including 1 10-digit statistical line. The first six digits are the international HS subheading; the general column is the normal US duty rate.
| HTS code | Description | Unit | General | Special | Column 2 |
|---|---|---|---|---|---|
| 2512.00.00.00 | Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or lessNote: See 9903.90.08. | t | Free | Free |
Statistical (10-digit) lines without a rate use the rate of the 8-digit line above them. Additional duties such as Section 301 and Section 232 may apply; check them with the tariff checker.
Free tools
Free customs and shipping tools
HTS Code Lookup
Search the full US Harmonized Tariff Schedule by product or code, with duty rates.
De Minimis & Tariff Checker
US de minimis status and the Section 301/232 tariffs that may apply to an import.
Landed Cost & Duty Calculator
Estimate import duties, taxes and fees so you can price DDP.
Commercial Invoice Generator
Make a customs-ready commercial invoice with HS codes, plus CN 22/CN 23-style declarations.
Want us to find the money leaking out of your shipping? Get a free profit-leak audit.
Request a free auditSource: Harmonized Tariff Schedule of the United States, 2026 HTS Revision 20 (effective 2026-09-28), U.S. International Trade Commission (hts.usitc.gov), imported 2026-10-07. Reference only; not legal or customs advice or a binding classification. Additional duties under Chapter 99 may apply. ShipWave is not affiliated with the USITC or U.S. Customs and Border Protection.