Is HTS 3811 subject to a Section 301 tariff?

Goods imported from China may carry an additional Section 301 tariff (typically +25% or +7.5%) on top of the base duty rate. Use the ShipSeeker calculator with origin set to China to estimate it.

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HTS 3811 Chapter 38

Antiknock Preparations, Oxidation Inhibitors, Gum Inhibitors, Viscosity Improvers, Anti-corrosive…

Q: What is the import duty rate for HTS 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:)?

The general (MFN) duty rate for HTS 3811 is varies by subheading. Free-trade-agreement (special) and Column 2 rates may also apply. Estimate the total landed cost by country of origin with the ShipSeeker calculator.

Q: What does HTS 3811 cover?

HTS 3811 covers 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: in the U.S. Harmonized Tariff Schedule (chapter 38).

U.S. import duty rate & tariff classification for HTS 3811 in the Harmonized Tariff Schedule.

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Full HTS description

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:

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Duty rates for HTS 3811 are set at the subheading level.

Across its 1 subheadings, published general rates are 6.5%. Pick a specific code below for its exact rate.

Subheadings under 3811

HTS code	Description	General rate
3811.90.00.00	Other	6.5%

Next steps for HTS 3811

🧮Calculate landed costDuty + Section 301/232 + CBP fees, by origin 🌍Compare origins (China+1)The cheapest compliant country to import from 📊U.S. trade volumesMiscellaneous Chemical Products (HS 38) 🤖Is this the right code?Describe your product & let the AI classifier check

🇨🇳 Importing from China? Goods from China may carry an additional Section 301 tariff (+25% or +7.5%) on top of the rate above. Estimate the real landed cost →

Source: U.S. International Trade Commission (USITC) Harmonized Tariff Schedule. Rates are for reference; verify with a licensed customs broker before importing.