# United States tariff lines under HS 2925.29

> The United States tariff splits HS 2925.29 (imines and their derivatives; salts thereof: Other) into 6 national lines: 2925.29.10.00 (N'-(4-Chloro-o-tolyl)-N,N- diemthylformamidine; Bunamidine hydrochloride; and Pentamidine), 2925.29.18.00 (N,N'-Diphenylguanidine; 3-Dimethyl amino methyleneiminophenol hydrochloride; 1,3-Di-o-tolylguanidine; andN,N-Dimethyl-N'-[3-[[(methylamino) carbonyl]- oxy] phenyl] methanimidamide monohydro- chloride), 2925.29.20.00 (drugs), 2925.29.60.00 (other) and 2 others. The general (MFN) duty differs by line: 6.5% on 2925.29.10.00, free on 2925.29.18.00, 6.5% on 2925.29.20.00, 6.5% on 2925.29.60.00, free on 2925.29.70.00 and 3.7% on 2925.29.90.00.

Source: https://border.bot/countries/united-states/hs-codes/292529
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) / [2925.29](https://border.bot/countries/united-states/hs-codes/292529)

## Key facts

- HS subheading: [2925.29](https://border.bot/hs-codes/292529)
- National lines: 6
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2925.29

The United States tariff splits HS 2925.29 (imines and their derivatives; salts thereof: Other) into 6 national lines: 2925.29.10.00 (N'-(4-Chloro-o-tolyl)-N,N- diemthylformamidine; Bunamidine hydrochloride; and Pentamidine), 2925.29.18.00 (N,N'-Diphenylguanidine; 3-Dimethyl amino methyleneiminophenol hydrochloride; 1,3-Di-o-tolylguanidine; andN,N-Dimethyl-N'-[3-[[(methylamino) carbonyl]- oxy] phenyl] methanimidamide monohydro- chloride), 2925.29.20.00 (drugs), 2925.29.60.00 (other) and 2 others.

The general (MFN) duty differs by line: 6.5% on 2925.29.10.00, free on 2925.29.18.00, 6.5% on 2925.29.20.00, 6.5% on 2925.29.60.00, free on 2925.29.70.00 and 3.7% on 2925.29.90.00.

- [2925.29.10.00](https://border.bot/countries/united-states/hs-codes/2925291000) Imines and their derivatives; salts thereof, Other, Aromatic, N'-(4-Chloro-o-tolyl)-N,N- diemthylformamidine; Bunamidine hydrochloride; and Pentamidine. Duty (MFN): 6.5%
- [2925.29.18.00](https://border.bot/countries/united-states/hs-codes/2925291800) Imines and their derivatives; salts thereof, Other, Aromatic, N,N'-Diphenylguanidine; 3-Dimethyl amino methyleneiminophenol hydrochloride; 1,3-Di-o-tolylguanidine; andN,N-Dimethyl-N'-[3-[[(methylamino) carbonyl]- oxy] phenyl] methanimidamide monohydro- chloride. Duty (MFN): free
- [2925.29.20.00](https://border.bot/countries/united-states/hs-codes/2925292000) Imines and their derivatives; salts thereof, Other, Aromatic, Other, Drugs. Duty (MFN): 6.5%
- [2925.29.60.00](https://border.bot/countries/united-states/hs-codes/2925296000) Imines and their derivatives; salts thereof, Other, Aromatic, Other, Other. Duty (MFN): 6.5%
- [2925.29.70.00](https://border.bot/countries/united-states/hs-codes/2925297000) Imines and their derivatives; salts thereof, Other, Other, Tetramethylguanidine. Duty (MFN): free
- [2925.29.90.00](https://border.bot/countries/united-states/hs-codes/2925299000) Imines and their derivatives; salts thereof, Other, Other, Other. Duty (MFN): 3.7%

## In other countries

No other national tariff on border.bot has live lines under 2925.29 yet.

- [The Harmonized System text for 2925.29](https://border.bot/hs-codes/292529)

- Previous subheading: [2925.21](https://border.bot/countries/united-states/hs-codes/292521) Carboxyimide-function compounds (including saccharin and its salts) and imine-function compounds
- Next subheading: [2926.10](https://border.bot/countries/united-states/hs-codes/292610) Nitrile-function compounds

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2925.29?

The United States tariff splits HS 2925.29 (imines and their derivatives; salts thereof: Other) into 6 national lines: 2925.29.10.00 (N'-(4-Chloro-o-tolyl)-N,N- diemthylformamidine; Bunamidine hydrochloride; and Pentamidine), 2925.29.18.00 (N,N'-Diphenylguanidine; 3-Dimethyl amino methyleneiminophenol hydrochloride; 1,3-Di-o-tolylguanidine; andN,N-Dimethyl-N'-[3-[[(methylamino) carbonyl]- oxy] phenyl] methanimidamide monohydro- chloride), 2925.29.20.00 (drugs), 2925.29.60.00 (other) and 2 others.

### What is the duty on HS 2925.29 in the United States?

The general (MFN) duty differs by line: 6.5% on 2925.29.10.00, free on 2925.29.18.00, 6.5% on 2925.29.20.00, 6.5% on 2925.29.60.00, free on 2925.29.70.00 and 3.7% on 2925.29.90.00.

## 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/292529.json