HTS heading 2809
Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined — 7 codes under this heading, with the duty on each.
| Code | Description | General rate | Units |
|---|---|---|---|
| 2809 | Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined + Ch. 99 | not stated | — |
| 2809.10.00.00 | Diphosphorus pentaoxide + Ch. 99 | Free | kg |
| 2809.20.00 | Phosphoric acid and polyphosphoric acids + Ch. 99 | Free | — |
| 2809.20.00.10 | Containing less than 65 percent available diphosphorus pentaoxide (P2O5) equivalents + Ch. 99 | Free (inherited from 2809.20.00) | t |
| 2809.20.00.20 | Other + Ch. 99 | Free (inherited from 2809.20.00) | t |
| 2809.20.00.30 | Other + Ch. 99 | Free (inherited from 2809.20.00) | t |
| 2809.20.00.40 | Polyphosphoric acids + Ch. 99 | Free (inherited from 2809.20.00) | t |
4 of these lines state no rate of their own and inherit one from the line above, which is how the schedule is read. Each says which line it came from.
Additional duties may apply
7 lines here reference Chapter 99, where Section 301, Section 232 and other additional duties live. Those are charged on top of the general rate and depend on where the goods were made. What those provisions are.
Source: Harmonized Tariff Schedule of the United States, U.S. International Trade Commission (public domain). Classification and the duties that finally apply to a shipment are a licensed customs broker's call.