# United States tariff line 2921.42.65.00: Products described in additional U.S. note 3 to section VI

> In the United States tariff, line 2921.42.65.00 covers aromatic monoamines and their derivatives; salts thereof, aniline derivatives and their salts, products described in additional U.S. note 3 to section VI. The general (MFN) duty rate is 6.5%. It falls under HS subheading 2921.42 in heading 29.21 (chapter 29).

Source: https://border.bot/countries/united-states/hs-codes/2921426500
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 29](https://border.bot/countries/united-states/hs-codes/29) / [2921.42](https://border.bot/countries/united-states/hs-codes/292142) / [2921.42.65.00](https://border.bot/countries/united-states/hs-codes/2921426500)

## Key facts

- Tariff line: 2921.42.65.00
- Covers: Aromatic monoamines and their derivatives; salts thereof, aniline derivatives and their salts, products described in additional U.S. note 3 to section VI
- Duty (MFN): 6.5%
- Preferential rates: From free (17 programmes or origins)
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2921.42](https://border.bot/hs-codes/292142)

## What this line covers

In the United States tariff, line 2921.42.65.00 covers aromatic monoamines and their derivatives; salts thereof, aniline derivatives and their salts, products described in additional U.S. note 3 to section VI.

Its legal text is “Products described in additional U.S. note 3 to section VI”, read under “Aromatic monoamines and their derivatives; salts thereof”, “Aniline derivatives and their salts”, “Other” and “Other”.

Products commonly classified here include 3,5-Difluoroaniline (CAS No. 372-39-4) and 2-Ethyl-N-[(2S)-1-methoxypropan-2-yl]-6-methylaniline (CAS No. 118604-70-9) (border.bot’s search keywords, not legal text).

## How it is structured

It falls under HS subheading 2921.42 in heading 29.21 (chapter 29). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 29: Organic chemicals
- Heading 29.21: Amine-function compounds
- Subheading 2921.42: Aromatic monoamines and their derivatives; salts thereof
- Within the subheading: Aniline derivatives and their salts
- Within the subheading: Other
- Within the subheading: Other
- Line 2921.42.65.00: Products described in additional U.S. note 3 to section VI

## Duty

The general (MFN) duty rate is 6.5%.

Duty-free entry applies to goods that qualify under 16 programmes, and to goods from a group of origins (origin group A+).

- Free: a group of origins (origin group A+) (A+)
- Free: United States-Australia Free Trade Agreement (AU)
- Free: United States-Bahrain Free Trade Agreement Implementation Act (BH)
- Free: United States-Chile Free Trade Agreement (CL)
- Free: United States-Colombia Trade Promotion Agreement Implementation Act (CO)
- Free: African Growth and Opportunity Act (D)
- Free: Caribbean Basin Economic Recovery Act (E)
- Free: United States-Israel Free Trade Area (IL)
- Free: United States-Jordan Free Trade Area Implementation Act (JO)
- Free: United States-Korea Free Trade Agreement Implementation Act (KR)
- Free: United States-Morocco Free Trade Agreement Implementation Act (MA)
- Free: United States-Oman Free Trade Agreement Implementation Act (OM)
- Free: Dominican Republic-Central America-United States Free Trade Agreement (P)
- Free: United States-Panama Trade Promotion Agreement Implementation Act (PA)
- Free: United States-Peru Trade Promotion Agreement Implementation Act (PE)
- Free: United States-Mexico-Canada Agreement (S)
- Free: United States-Singapore Free Trade Agreement (SG)

## In other countries

No other national tariff on border.bot has live lines under 2921.42 yet.

- [The Harmonized System text for 2921.42](https://border.bot/hs-codes/292142)

## Other lines under 2921.42

- [2921.42.10.00](https://border.bot/countries/united-states/hs-codes/2921421000) N,N-Dimethylaniline
- [2921.42.15.00](https://border.bot/countries/united-states/hs-codes/2921421500) N-Ethylaniline; andN,N-Diethylaniline
- [2921.42.16.00](https://border.bot/countries/united-states/hs-codes/2921421600) 2,4,5-Trichloroaniline
- [2921.42.18.00](https://border.bot/countries/united-states/hs-codes/2921421800) o-Aminobenzenesulfonic acid (Orthanilic acid); 6-Chlorometanilic acid; 2-Chloro-5-nitroaniline; 4-Chloro-3-nitroaniline; 2,3-Dichloroaniline; 2,4-Dichloroaniline; 2,5-Dichloroaniline; 3,5-Dichloroaniline;N,N-Diethylmetanilic acid;N,N-Diethylmetanilic acid, sodium salt; 2,4-Difluoroaniline;p-Fluoroaniline;N-Methylaniline; andm-Nitroaniline
- [2921.42.21.00](https://border.bot/countries/united-states/hs-codes/2921422100) Metanilic acid
- [2921.42.22.00](https://border.bot/countries/united-states/hs-codes/2921422200) Sulfanilic acid
- [2921.42.23.00](https://border.bot/countries/united-states/hs-codes/2921422300) 3,4-Dichloroaniline
- [2921.42.36.00](https://border.bot/countries/united-states/hs-codes/2921423600) m-Chloroaniline; 2-Chloro-4-nitroaniline; 2,5-Dichloroaniline-4-sulfonic acid and its monosodium salt; 2,4-Dinitroaniline;o-Nitroaniline-p-sulfonic acid, sodium salt; and 2,3,4-Trifluoroaniline
- [2921.42.55.00](https://border.bot/countries/united-states/hs-codes/2921425500) Fast color bases
- [2921.42.90.00](https://border.bot/countries/united-states/hs-codes/2921429000) Other

- Previous line: [2921.42.55.00](https://border.bot/countries/united-states/hs-codes/2921425500) Fast color bases
- Next line: [2921.42.90.00](https://border.bot/countries/united-states/hs-codes/2921429000) Other

## Frequently asked questions

### What does tariff line 2921.42.65.00 cover in the United States tariff?

In the United States tariff, line 2921.42.65.00 covers aromatic monoamines and their derivatives; salts thereof, aniline derivatives and their salts, products described in additional U.S. note 3 to section VI.

### What is the general (MFN) duty on 2921.42.65.00 in the United States?

The general (MFN) duty rate is 6.5%.

### Which preferential rates apply to 2921.42.65.00?

Duty-free entry applies to goods that qualify under 16 programmes: the United States-Australia Free Trade Agreement, the United States-Bahrain Free Trade Agreement Implementation Act, the United States-Chile Free Trade Agreement, the United States-Colombia Trade Promotion Agreement Implementation Act, African Growth and Opportunity Act, Caribbean Basin Economic Recovery Act, the United States-Israel Free Trade Area, the United States-Jordan Free Trade Area Implementation Act, the United States-Korea Free Trade Agreement Implementation Act, the United States-Morocco Free Trade Agreement Implementation Act, the United States-Oman Free Trade Agreement Implementation Act, the Dominican Republic-Central America-United States Free Trade Agreement, the United States-Panama Trade Promotion Agreement Implementation Act, the United States-Peru Trade Promotion Agreement Implementation Act, the United States-Mexico-Canada Agreement and the United States-Singapore Free Trade Agreement, and to goods from a group of origins (origin group A+).

## 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/2921426500.json