# United States tariff lines under HS 2921.42

> The United States tariff splits HS 2921.42 (aromatic monoamines and their derivatives; salts thereof: Aniline derivatives and their salts) into 11 national lines: 2921.42.10.00 (N,N-Dimethylaniline), 2921.42.15.00 (N-Ethylaniline; andN,N-Diethylaniline), 2921.42.16.00 (2,4,5-Trichloroaniline), 2921.42.18.00 (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) and 7 others.

Source: https://border.bot/countries/united-states/hs-codes/292142
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)

## Key facts

- HS subheading: [2921.42](https://border.bot/hs-codes/292142)
- National lines: 11
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2921.42

The United States tariff splits HS 2921.42 (aromatic monoamines and their derivatives; salts thereof: Aniline derivatives and their salts) into 11 national lines: 2921.42.10.00 (N,N-Dimethylaniline), 2921.42.15.00 (N-Ethylaniline; andN,N-Diethylaniline), 2921.42.16.00 (2,4,5-Trichloroaniline), 2921.42.18.00 (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) and 7 others.

- [2921.42.10.00](https://border.bot/countries/united-states/hs-codes/2921421000) Aromatic monoamines and their derivatives; salts thereof, Aniline derivatives and their salts, N,N-Dimethylaniline. Duty (MFN): 6.5%
- [2921.42.15.00](https://border.bot/countries/united-states/hs-codes/2921421500) Aromatic monoamines and their derivatives; salts thereof, Aniline derivatives and their salts, N-Ethylaniline; andN,N-Diethylaniline. Duty (MFN): 6.5%
- [2921.42.16.00](https://border.bot/countries/united-states/hs-codes/2921421600) Aromatic monoamines and their derivatives; salts thereof, Aniline derivatives and their salts, 2,4,5-Trichloroaniline. Duty (MFN): free
- [2921.42.18.00](https://border.bot/countries/united-states/hs-codes/2921421800) Aromatic monoamines and their derivatives; salts thereof, Aniline derivatives and their salts, 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. Duty (MFN): 5.8%
- [2921.42.21.00](https://border.bot/countries/united-states/hs-codes/2921422100) Aromatic monoamines and their derivatives; salts thereof, Aniline derivatives and their salts, Metanilic acid. Duty (MFN): 6.5%
- [2921.42.22.00](https://border.bot/countries/united-states/hs-codes/2921422200) Aromatic monoamines and their derivatives; salts thereof, Aniline derivatives and their salts, Sulfanilic acid. Duty (MFN): 6.5%
- [2921.42.23.00](https://border.bot/countries/united-states/hs-codes/2921422300) Aromatic monoamines and their derivatives; salts thereof, Aniline derivatives and their salts, 3,4-Dichloroaniline. Duty (MFN): 6.5%
- [2921.42.36.00](https://border.bot/countries/united-states/hs-codes/2921423600) Aromatic monoamines and their derivatives; salts thereof, Aniline derivatives and their salts, 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. Duty (MFN): free
- [2921.42.55.00](https://border.bot/countries/united-states/hs-codes/2921425500) Aromatic monoamines and their derivatives; salts thereof, Aniline derivatives and their salts, Other, Fast color bases. Duty (MFN): 6.5%
- [2921.42.65.00](https://border.bot/countries/united-states/hs-codes/2921426500) Aromatic monoamines and their derivatives; salts thereof, Aniline derivatives and their salts, Other, Other, Products described in additional U.S. note 3 to section VI. Duty (MFN): 6.5%
- [2921.42.90.00](https://border.bot/countries/united-states/hs-codes/2921429000) Aromatic monoamines and their derivatives; salts thereof, Aniline derivatives and their salts, Other, Other, Other. Duty (MFN): 6.5%

## 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)

- Previous subheading: [2921.41](https://border.bot/countries/united-states/hs-codes/292141) Aniline and its salts
- Next subheading: [2921.43](https://border.bot/countries/united-states/hs-codes/292143) Toluidines and their derivatives; salts thereof

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2921.42?

The United States tariff splits HS 2921.42 (aromatic monoamines and their derivatives; salts thereof: Aniline derivatives and their salts) into 11 national lines: 2921.42.10.00 (N,N-Dimethylaniline), 2921.42.15.00 (N-Ethylaniline; andN,N-Diethylaniline), 2921.42.16.00 (2,4,5-Trichloroaniline), 2921.42.18.00 (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) and 7 others.

## 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/292142.json