Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
HTS heading 2809: Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined
7 numbered lines under heading 2809, including 5 10-digit statistical lines. 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 |
|---|---|---|---|---|---|
| 2809 | Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined: | ||||
| 2809.10.00.00 | Diphosphorus pentaoxide | kg | Free | 25% | |
| 2809.20.00 | Phosphoric acid and polyphosphoric acids | Free | Free | ||
| Phosphoric acid: | |||||
| Fertilizer grade: | |||||
| 2809.20.00.10 | Containing less than 65 percent available diphosphorus pentaoxide (P2O5) equivalents | t | |||
| 2809.20.00.20 | Other | t | |||
| 2809.20.00.30 | Other | t | |||
| 2809.20.00.40 | Polyphosphoric acids | t |
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.
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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.