# United States tariff line 3804.00.10.00: Lignin sulfonic acid and its salts

> In the United States tariff, line 3804.00.10.00 covers lignin sulfonic acid and its salts. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 3804.00 in heading 38.04 (chapter 38).

Source: https://border.bot/countries/united-states/hs-codes/3804001000
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) / [3804.00](https://border.bot/countries/united-states/hs-codes/380400) / [3804.00.10.00](https://border.bot/countries/united-states/hs-codes/3804001000)

## Key facts

- Tariff line: 3804.00.10.00
- Covers: Lignin sulfonic acid and its salts
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [3804.00](https://border.bot/hs-codes/380400)

## What this line covers

In the United States tariff, line 3804.00.10.00 covers lignin sulfonic acid and its salts.

Its legal text is “Lignin sulfonic acid and its salts”.

## How it is structured

It falls under HS subheading 3804.00 in heading 38.04 (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 38.04: Residual lyes from the manufacture of wood pulp, whether or not concentrated, desugared or chemically treated, including lignin sulphonates, but excluding tall oil of heading 38.03
- Line 3804.00.10.00: Lignin sulfonic acid and its salts

## 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 3804.00 yet.

- [The Harmonized System text for 3804.00](https://border.bot/hs-codes/380400)

## Other lines under 3804.00

- [3804.00.50.00](https://border.bot/countries/united-states/hs-codes/3804005000) Other

- Previous line: [3803.00.00.00](https://border.bot/countries/united-states/hs-codes/3803000000) Tall oil, whether or not refined
- Next line: [3804.00.50.00](https://border.bot/countries/united-states/hs-codes/3804005000) Other

## Frequently asked questions

### What does tariff line 3804.00.10.00 cover in the United States tariff?

In the United States tariff, line 3804.00.10.00 covers lignin sulfonic acid and its salts.

### What is the general (MFN) duty on 3804.00.10.00 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/3804001000.json