# United States tariff lines under HS 2921.29

> The United States tariff splits HS 2921.29 (acyclic polyamines and their derivatives; salts thereof: Other) into 4 national lines: 2921.29.00.10 (tetraethylene pentamine), 2921.29.00.20 (triethylenetetramine), 2921.29.00.30 (diethylenetriamine) and 2921.29.00.55 (other). The general (MFN) duty is 6.5% on all 4 lines.

Source: https://border.bot/countries/united-states/hs-codes/292129
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) / [2921.29](https://border.bot/countries/united-states/hs-codes/292129)

## Key facts

- HS subheading: [2921.29](https://border.bot/hs-codes/292129)
- Duty (MFN): 6.5%
- National lines: 4
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2921.29

The United States tariff splits HS 2921.29 (acyclic polyamines and their derivatives; salts thereof: Other) into 4 national lines: 2921.29.00.10 (tetraethylene pentamine), 2921.29.00.20 (triethylenetetramine), 2921.29.00.30 (diethylenetriamine) and 2921.29.00.55 (other).

The general (MFN) duty is 6.5% on all 4 lines.

- [2921.29.00.10](https://border.bot/countries/united-states/hs-codes/2921290010) Acyclic polyamines and their derivatives; salts thereof, Other, Tetraethylene pentamine. Duty (MFN): 6.5%
- [2921.29.00.20](https://border.bot/countries/united-states/hs-codes/2921290020) Acyclic polyamines and their derivatives; salts thereof, Other, Triethylenetetramine. Duty (MFN): 6.5%
- [2921.29.00.30](https://border.bot/countries/united-states/hs-codes/2921290030) Acyclic polyamines and their derivatives; salts thereof, Other, Diethylenetriamine. Duty (MFN): 6.5%
- [2921.29.00.55](https://border.bot/countries/united-states/hs-codes/2921290055) Acyclic polyamines and their derivatives; salts thereof, Other, Other. Duty (MFN): 6.5%

## In other countries

No other national tariff on border.bot has live lines under 2921.29 yet.

- [The Harmonized System text for 2921.29](https://border.bot/hs-codes/292129)

- Previous subheading: [2921.22](https://border.bot/countries/united-states/hs-codes/292122) Hexamethylenediamine and its salts
- Next subheading: [2921.30](https://border.bot/countries/united-states/hs-codes/292130) Cyclanic, cyclenic or cycloterpenic mono- or polyamines, and their derivatives; salts thereof

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2921.29?

The United States tariff splits HS 2921.29 (acyclic polyamines and their derivatives; salts thereof: Other) into 4 national lines: 2921.29.00.10 (tetraethylene pentamine), 2921.29.00.20 (triethylenetetramine), 2921.29.00.30 (diethylenetriamine) and 2921.29.00.55 (other).

### What is the duty on HS 2921.29 in the United States?

The general (MFN) duty is 6.5% on all 4 lines.

## 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/292129.json