HTS heading
2809Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined:
Rates as published in 2026 HTS Revision 15, captured 2026-08-13. Source: USITC Harmonized Tariff Schedule.
Current duty rates (2 lines)
| Code | Description | General | Special | Column 2 |
|---|---|---|---|---|
| 2809.10.00.00 | Diphosphorus pentaoxide | Free | — | 25% |
| 2809.20.00 | Phosphoric acid and polyphosphoric acids | Free | — | Free |
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