HTS heading 3811
Antiknock 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 — 8 codes under this heading, with the duty on each.
| Code | Description | General rate | Units |
|---|---|---|---|
| 3811 | Antiknock 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 + Ch. 99 | not stated | — |
| 3811.11 | Based on lead compounds + Ch. 99 | not stated | — |
| 3811.11.10.00 | Based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead + Ch. 99 | Free | kg |
| 3811.11.50.00 | Other + Ch. 99 | Free | kg |
| 3811.19.00.00 | Other + Ch. 99 | 6.5% | kg |
| 3811.21.00.00 | Containing petroleum oils or oils obtained from bituminous minerals + Ch. 99 | 6.5% | kg |
| 3811.29.00.00 | Other + Ch. 99 | 6.5% | kg |
| 3811.90.00.00 | Other + Ch. 99 | 6.5% | kg |
Additional duties may apply
8 lines here reference Chapter 99, where Section 301, Section 232 and other additional duties live. Those are charged on top of the general rate and depend on where the goods were made. What those provisions are.
Source: Harmonized Tariff Schedule of the United States, U.S. International Trade Commission (public domain). Classification and the duties that finally apply to a shipment are a licensed customs broker's call.