3811.90.00.00—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, other
HTS 3811.90.00.00 is the U.S. Harmonized Tariff Schedule classification for 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, other. It's a 10-digit statistical line in Chapter 38: Miscellaneous chemical products, Section VI: Products of the Chemical or Allied Industries, used by U.S. Customs and Border Protection to determine the duty rate at entry. No Chapter 99 tariff modifications (Section 301, Section 232, IEEPA) or AD/CVD orders currently flag this code in Tandom's catalog.
Past CBP decisions classifying real products under this HTS code. Useful precedent when classifying a similar product — each ruling shows how CBP interpreted the code for a specific case.
HTS 3811.90.00.00 is the U.S. Harmonized Tariff Schedule classification for 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, other. It belongs to Chapter 38 of the HTSUS.
What is the general duty rate for HTS 3811.90.00.00?
The general (Column 1) duty rate for HTS 3811.90.00.00 is 6.5%. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
Are there preferential or trade-program rates for HTS 3811.90.00.00?
Yes. Imports of HTS 3811.90.00.00 from countries party to a trade program (such as USMCA, KORUS, GSP, or the African Growth and Opportunity Act) may qualify for the special rate: Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG). Eligibility depends on rules of origin and certification.
What is the Column 2 (statutory) rate for HTS 3811.90.00.00?
The Column 2 rate for HTS 3811.90.00.00 is 3.7¢/kg + 60%. This rate applies to imports from countries that do not have normal trade relations with the United States (currently Cuba and North Korea).
Are there Section 301 or Section 232 tariffs on HTS 3811.90.00.00?
No active Chapter 99 tariff overlays (Section 301, Section 232, IEEPA reciprocal, etc.) currently flag HTS 3811.90.00.00 in Tandom's catalog. Use the calculator's date + origin inputs to confirm against any retroactive overlay you may be filing.
Does HTS 3811.90.00.00 have any antidumping or countervailing duty (AD/CVD) orders?
No active AD/CVD orders currently flag HTS 3811.90.00.00 in Tandom's catalog. Tandom monitors Federal Register notices daily; a flag will appear here within 24h of any new order's publication.
Trade programs(16)
Free Trade Agreement and special-program eligibility