| 2931.10.00 | - Tetramethyl lead and tetraethyl lead | |
| 2931.20.00 | - Tributyltin compounds | |
| 2931.31.00 | -- Dimethyl methylphosphonate | |
| 2931.32.00 | -- Dimethyl propylphosphonate | |
| 2931.33.00 | -- Diethyl ethylphosphonate | |
| 2931.34.00 | -- Sodium 3-(trihydroxysilyl)propyl methylphosphonate | |
| 2931.35.00 | -- 2,4,6-Tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6- trioxide | |
| 2931.36.00 | -- (5-Ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5-yl) methyl methyl methylphosphonate | |
| 2931.37.00 | -- Bis[(5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphinan-5- yl)methyl] methylphosphonate | |
| 2931.38.00 | -- Salt of methylphosphonic acid and (aminoiminomethyl)urea (1 : 1) | |
| 2931.39.00 | -- Other | |
| 2931.90.00 | - Other |