From Chapter 28: Chapter 28
| HTS Code | Description | General Duty |
|---|---|---|
| 2809100000 | Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined Diphosphorus pentaoxide | Free |
| 2809200000 | Diphosphorus pentaoxide; phosphoric acid;polyphosphoric acids, whether or not chemically defined Phosphoric acid and polyphosphoric acids | Free |
| 2809200010 | Fertilizer grade Containing less than 65 percent available diphosphorus pentaoxide (P2O5) equivalents | Free |
| 2809200020 | Fertilizer grade Other | Free |
| 2809200030 | Phosphoric acid Other | Free |
| 2809200040 | Phosphoric acid and polyphosphoric acids Polyphosphoric acids | Free |