Chapter 38 · Miscellaneous chemical products · Section 6
HS Code 3811.90
Other
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
US HTS + UK Tariff v4.0.1596 · updated 2026-09-10 · sources
United States - HTS lines under 3811.90
Source: official Harmonized Tariff Schedule (USITC). "General" is the normal-trade-relations rate; "Special" lists preference programs; "Other" is the column-2 rate. Additional Section 232/301 duties may apply on top.
| HTS code | Description | General | Special | Other | Unit |
|---|---|---|---|---|---|
| 3811.90.00 | Other | 6.5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) | 3.7¢/kg + 60% | kg |
Estimate the US duty runs in your browser · no caps
Enter the customs value (and quantity, when a rate is per-unit) to estimate the general-rate duty per HTS line. Estimates exclude Section 232/301 surcharges, MPF/HMF and fees. Not a customs ruling.
European Union - CN codes under 3811.90
Source: EU Combined Nomenclature (Eurostat, © European Union, reused per Decision 2011/833/EU). Duty rates and measures live in TARIC; each code links to the official consultation.
| CN code | Description | |
|---|---|---|
| 3811 90 00 | Other | EU duty (TARIC) → |
United Kingdom - commodity codes under 3811.90
Source: UK Integrated Online Tariff (Open Government Licence v3.0). Declarable 10-digit codes go on the customs declaration; check the official page for the current duty and VAT measures.
| Commodity code | Description | |
|---|---|---|
| 3811 90 00 00 | Other | UK duty & VAT → |
| 3811 90 00 40 | Solution of a quaternary ammonium salt based on polyisobutenyl succinimide, containing by weight 10% or more but not more than 29,9% of 2-ethylhexanol | UK duty & VAT → |
| 3811 90 00 50 | Corrosion inhibitor containing :<br> <br><br><br>- polyisobutenyl succinic acid and <br> <br><br><br>- more than 5 % and not more than 20 % by weight of mineral oils<br>for use in the manufacture of blends of additives for fuels | UK duty & VAT → |
| 3811 90 00 60 | Solution of mineral oils (CAS RN 64742-52-5, 64742-53-6, 64742-56-9 or blends thereof) containing by weight: -25 % or more but not more than 55 % of the barium, calcium, magnesium or zinc salt of dinonylnaphthylsulphonic acid (CAS RN 25619-56-1, 28015-99-8, 28016-00-4, or 57855-77-3) -whether or not, not more than 25 % of the barium, calcium, magnesium or zinc salt of a mixture of C3-C24 carboxylic acids (CAS RN 68990-37-4) | UK duty & VAT → |
| 3811 90 00 90 | Other | UK duty & VAT → |
Other subheadings in 3811
Sources: U.S. International Trade Commission, Harmonized Tariff Schedule (public domain) · EU Combined Nomenclature © European Union, Eurostat (Decision 2011/833/EU) · UK Integrated Online Tariff, contains public sector information licensed under the Open Government Licence v3.0. Data refreshed weekly. Details on About & Data Sources.