| Tariff Classification |
| section 06 | Products of the chemical or allied industries |
| chapter 38 | Miscellaneous chemical products |
| 38.11 | Anti-knock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils: |
| －Anti-knock preparations: |
| 3811.11 | －－Based on lead compounds |
|