# United States tariff lines under HS 2921.19

> The United States tariff splits HS 2921.19 (acyclic monoamines and their derivatives; salts thereof: Other) into 7 national lines: 2921.19.11.00 (mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any of the foregoing), 2921.19.31.00 (3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride), 2921.19.61.10 (N,N-Dialkyl (methyl, ethyl or n-propyl)-2-chloroethylamines and their protonated salts), 2921.19.61.20 (bis(2-chloroethyl)ethylamine)) and 3 others. The general (MFN) duty differs by line: 3.7% on 2921.19.11.00, free on 2921.19.31.00, 6.5% on 2921.19.61.10, 6.5% on 2921.19.61.20, 6.5% on 2921.19.61.30, 6.5% on 2921.19.61.40 and 6.5% on 2921.19.61.95.

Source: https://border.bot/countries/united-states/hs-codes/292119
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) / [2921.19](https://border.bot/countries/united-states/hs-codes/292119)

## Key facts

- HS subheading: [2921.19](https://border.bot/hs-codes/292119)
- National lines: 7
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2921.19

The United States tariff splits HS 2921.19 (acyclic monoamines and their derivatives; salts thereof: Other) into 7 national lines: 2921.19.11.00 (mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any of the foregoing), 2921.19.31.00 (3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride), 2921.19.61.10 (N,N-Dialkyl (methyl, ethyl or n-propyl)-2-chloroethylamines and their protonated salts), 2921.19.61.20 (bis(2-chloroethyl)ethylamine)) and 3 others.

The general (MFN) duty differs by line: 3.7% on 2921.19.11.00, free on 2921.19.31.00, 6.5% on 2921.19.61.10, 6.5% on 2921.19.61.20, 6.5% on 2921.19.61.30, 6.5% on 2921.19.61.40 and 6.5% on 2921.19.61.95.

- [2921.19.11.00](https://border.bot/countries/united-states/hs-codes/2921191100) Acyclic monoamines and their derivatives; salts thereof, Other, Mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any of the foregoing. Duty (MFN): 3.7%
- [2921.19.31.00](https://border.bot/countries/united-states/hs-codes/2921193100) Acyclic monoamines and their derivatives; salts thereof, Other, 3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride. Duty (MFN): free
- [2921.19.61.10](https://border.bot/countries/united-states/hs-codes/2921196110) Acyclic monoamines and their derivatives; salts thereof, Other, Other, N,N-Dialkyl (methyl, ethyl or n-propyl)-2-chloroethylamines and their protonated salts. Duty (MFN): 6.5%
- [2921.19.61.20](https://border.bot/countries/united-states/hs-codes/2921196120) Acyclic monoamines and their derivatives; salts thereof, Other, Other, Bis(2-chloroethyl)ethylamine). Duty (MFN): 6.5%
- [2921.19.61.30](https://border.bot/countries/united-states/hs-codes/2921196130) Acyclic monoamines and their derivatives; salts thereof, Other, Other, Chlormethine (INN) (bis(2-chloroethyl)methylamine). Duty (MFN): 6.5%
- [2921.19.61.40](https://border.bot/countries/united-states/hs-codes/2921196140) Acyclic monoamines and their derivatives; salts thereof, Other, Other, Trichlormethine (INN) (tris(2-chloroethyl)amine). Duty (MFN): 6.5%
- [2921.19.61.95](https://border.bot/countries/united-states/hs-codes/2921196195) Acyclic monoamines and their derivatives; salts thereof, Other, Other, Other. Duty (MFN): 6.5%

## In other countries

No other national tariff on border.bot has live lines under 2921.19 yet.

- [The Harmonized System text for 2921.19](https://border.bot/hs-codes/292119)

- Previous subheading: [2921.14](https://border.bot/countries/united-states/hs-codes/292114) Amine-function compounds
- Next subheading: [2921.21](https://border.bot/countries/united-states/hs-codes/292121) Amine-function compounds

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2921.19?

The United States tariff splits HS 2921.19 (acyclic monoamines and their derivatives; salts thereof: Other) into 7 national lines: 2921.19.11.00 (mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any of the foregoing), 2921.19.31.00 (3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride), 2921.19.61.10 (N,N-Dialkyl (methyl, ethyl or n-propyl)-2-chloroethylamines and their protonated salts), 2921.19.61.20 (bis(2-chloroethyl)ethylamine)) and 3 others.

### What is the duty on HS 2921.19 in the United States?

The general (MFN) duty differs by line: 3.7% on 2921.19.11.00, free on 2921.19.31.00, 6.5% on 2921.19.61.10, 6.5% on 2921.19.61.20, 6.5% on 2921.19.61.30, 6.5% on 2921.19.61.40 and 6.5% on 2921.19.61.95.

## 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/292119.json