# United States tariff line 3811.11.10.00: Based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead

> In the United States tariff, line 3811.11.10.00 covers antiknock preparations, based on lead compounds, based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 3811.11 in heading 38.11 (chapter 38).

Source: https://border.bot/countries/united-states/hs-codes/3811111000
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 38](https://border.bot/countries/united-states/hs-codes/38) / [3811.11](https://border.bot/countries/united-states/hs-codes/381111) / [3811.11.10.00](https://border.bot/countries/united-states/hs-codes/3811111000)

## Key facts

- Tariff line: 3811.11.10.00
- Covers: Antiknock preparations, based on lead compounds, based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [3811.11](https://border.bot/hs-codes/381111)

## What this line covers

In the United States tariff, line 3811.11.10.00 covers antiknock preparations, based on lead compounds, based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead.

Its legal text is “Based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead”, read under “Antiknock preparations” and “Based on lead compounds”.

## How it is structured

It falls under HS subheading 3811.11 in heading 38.11 (chapter 38). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 38: Miscellaneous chemical products
- Heading 38.11: 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
- Subheading 3811.11: Antiknock preparations
- Within the subheading: Based on lead compounds
- Line 3811.11.10.00: Based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead

## Duty

Goods under this line enter free of general (MFN) duty.

## In other countries

No other national tariff on border.bot has live lines under 3811.11 yet.

- [The Harmonized System text for 3811.11](https://border.bot/hs-codes/381111)

## Other lines under 3811.11

- [3811.11.50.00](https://border.bot/countries/united-states/hs-codes/3811115000) Other

- Previous line: [3810.90.50.00](https://border.bot/countries/united-states/hs-codes/3810905000) Other
- Next line: [3811.11.50.00](https://border.bot/countries/united-states/hs-codes/3811115000) Other

## Frequently asked questions

### What does tariff line 3811.11.10.00 cover in the United States tariff?

In the United States tariff, line 3811.11.10.00 covers antiknock preparations, based on lead compounds, based on tetraethyl lead or on a mixture of tetraethyl lead and tetramethyl lead.

### What is the general (MFN) duty on 3811.11.10.00 in the United States?

Goods under this line enter free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/3811111000.json