# United States tariff lines under HS 2921.44

> The United States tariff splits HS 2921.44 (aromatic monoamines and their derivatives; salts thereof: Diphenylamine and its derivatives; salts thereof) into 4 national lines: 2921.44.05.00 (4,4'-Bis (α,α-dimethylbenzyl) diphenylamine; andN-Nitrosodiphenylamine), 2921.44.10.00 (nitrodiphenylamine), 2921.44.20.00 (products described in additional U.S. note 3 to section VI) and 2921.44.70.00 (other). The general (MFN) duty differs by line: free on 2921.44.05.00, 6.5% on 2921.44.10.00, 6.5% on 2921.44.20.00 and 6.5% on 2921.44.70.00.

Source: https://border.bot/countries/united-states/hs-codes/292144
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) / [2921.44](https://border.bot/countries/united-states/hs-codes/292144)

## Key facts

- HS subheading: [2921.44](https://border.bot/hs-codes/292144)
- National lines: 4
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2921.44

The United States tariff splits HS 2921.44 (aromatic monoamines and their derivatives; salts thereof: Diphenylamine and its derivatives; salts thereof) into 4 national lines: 2921.44.05.00 (4,4'-Bis (α,α-dimethylbenzyl) diphenylamine; andN-Nitrosodiphenylamine), 2921.44.10.00 (nitrodiphenylamine), 2921.44.20.00 (products described in additional U.S. note 3 to section VI) and 2921.44.70.00 (other).

The general (MFN) duty differs by line: free on 2921.44.05.00, 6.5% on 2921.44.10.00, 6.5% on 2921.44.20.00 and 6.5% on 2921.44.70.00.

- [2921.44.05.00](https://border.bot/countries/united-states/hs-codes/2921440500) Aromatic monoamines and their derivatives; salts thereof, Diphenylamine and its derivatives; salts thereof, 4,4'-Bis (α,α-dimethylbenzyl) diphenylamine; andN-Nitrosodiphenylamine. Duty (MFN): free
- [2921.44.10.00](https://border.bot/countries/united-states/hs-codes/2921441000) Aromatic monoamines and their derivatives; salts thereof, Diphenylamine and its derivatives; salts thereof, Nitrodiphenylamine. Duty (MFN): 6.5%
- [2921.44.20.00](https://border.bot/countries/united-states/hs-codes/2921442000) Aromatic monoamines and their derivatives; salts thereof, Diphenylamine and its derivatives; salts thereof, Other, Products described in additional U.S. note 3 to section VI. Duty (MFN): 6.5%
- [2921.44.70.00](https://border.bot/countries/united-states/hs-codes/2921447000) Aromatic monoamines and their derivatives; salts thereof, Diphenylamine and its derivatives; salts thereof, Other, Other. Duty (MFN): 6.5%

## In other countries

No other national tariff on border.bot has live lines under 2921.44 yet.

- [The Harmonized System text for 2921.44](https://border.bot/hs-codes/292144)

- Previous subheading: [2921.43](https://border.bot/countries/united-states/hs-codes/292143) Toluidines and their derivatives; salts thereof
- Next subheading: [2921.45](https://border.bot/countries/united-states/hs-codes/292145) 1-Naphthylamine (α-Naphthylamine), 2-Naphthylamine (β-Naphthylamine), and their derivatives; salts thereof

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2921.44?

The United States tariff splits HS 2921.44 (aromatic monoamines and their derivatives; salts thereof: Diphenylamine and its derivatives; salts thereof) into 4 national lines: 2921.44.05.00 (4,4'-Bis (α,α-dimethylbenzyl) diphenylamine; andN-Nitrosodiphenylamine), 2921.44.10.00 (nitrodiphenylamine), 2921.44.20.00 (products described in additional U.S. note 3 to section VI) and 2921.44.70.00 (other).

### What is the duty on HS 2921.44 in the United States?

The general (MFN) duty differs by line: free on 2921.44.05.00, 6.5% on 2921.44.10.00, 6.5% on 2921.44.20.00 and 6.5% on 2921.44.70.00.

## 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/292144.json