| 2809.20.00 | 10 | Containing less than 65 percent available diphosphorus pentaoxide (P2O5) equivalents | t | | | |
| 3103.10.00 | 10 | Normal and enriched superphosphates, less than 40 percent available phosphorus pentoxide (P2O5) equivalent | t | | | |
| 3103.10.00 | 20 | Concentrated superphosphates, 40 percent or more available phosphorus pentoxide (P2O5) equivalent | t | | | |
