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HTS 3811Chapter 38

HTS 3811Antiknock 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: Duty Rate & Import Guide

Miscellaneous Chemical Products · $64.9M monthly imports · 100% from 1 countries · Updated daily from USITC

Duty Rates

General

Free

Special

Free

Column 2

Free

Trade Agreement Eligibility

CUSMAKORUS

Trade Intelligence

Monthly Imports

$64.9M

2026-01

Trade Concentration

100%

from top 3 of 1 origins

Regulatory Pressure

LOW

1 rulings — · 0 reg · 0 cases

Global Rates

🇺🇸 Free

🇬🇧 United Kingdom: N/A · 🇪🇺 European Union: N/A · 🇨🇦 Canada: N/A · 🇧🇷 Brazil: N/A

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Data compiled from USITC HTS, US Census Bureau, CBP CROSS Rulings · As of 2026-04-28 · Updates monthly

Supply Chain Risk

100% of US imports for this code come from just 1 countries. High origin concentration increases exposure to trade disruptions or tariff escalations.

Subheadings (7)

CodeDescriptionRate
3811.11Based on lead compounds:
3811.11.10.00Based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl leadFree
3811.11.50.00OtherFree
3811.19.00.00Other6.5%
3811.21.00.00Containing petroleum oils or oils obtained from bituminous minerals6.5%
3811.29.00.00Other6.5%
3811.90.00.00Other6.5%

CBP Rulings (1)

088705Classification

Reconsideration of New York Ruling Letter (NYRL) 858227

Matching Export Code (Schedule B)

3811110000Schedule B

ANTIKNOCK PREPARATIONS BASED ON LEAD COMPOUNDS

Census Bureau export classification matching this HTS import code.

3810.90.50.003811.11