| 2809 | | Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined: | | | | |
| 2809.20.00 | | Phosphoric acid and polyphosphoric acids | | Free | | Free |
| 2809.20.00 | 10 | Phosphoric acid: | | | | |
| 2809.20.00 | 40 | Polyphosphoric acids | t | | | |
| 2919 | | Phosphoric esters and their salts, including lacto- phosphates; their halogenated, sulfonated, nitrated or nitrosated derivatives: | | | | |
| 2920.11.00 | 00 | Thiophosphoric esters (phosphorodithioates) and their salts, their halogenated, sulfonated, nitrated or nitrosated derivatives: | | | | |
