Key facts
- HS subheading
- 2921.51
- Duty (MFN)
- 6.5%
- National lines
- 4
- Tariff
- United States
- Chapter
- 29: Organic chemicals
Summary
The United States tariff splits HS 2921.51 (aromatic polyamines and their derivatives; salts thereof: o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof) into 4 national lines: 2921.51.10.00 (4-Amino-2-(N,N-diethylamino) toluene hydrochloride;m-Phenylenediamine;o-Phenylenediamine; Toluene-2,4-diamine; Toluene-2,5-diamine; and Toluene-2,5-diamine sulfate), 2921.51.20.00 (photographic chemicals), 2921.51.30.00 (products described in additional U.S. note 3 to section VI) and 2921.51.50.00 (other). The general (MFN) duty is 6.5% on all 4 lines.
United States lines under 2921.51
The United States tariff splits HS 2921.51 (aromatic polyamines and their derivatives; salts thereof: o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof) into 4 national lines: 2921.51.10.00 (4-Amino-2-(N,N-diethylamino) toluene hydrochloride;m-Phenylenediamine;o-Phenylenediamine; Toluene-2,4-diamine; Toluene-2,5-diamine; and Toluene-2,5-diamine sulfate), 2921.51.20.00 (photographic chemicals), 2921.51.30.00 (products described in additional U.S. note 3 to section VI) and 2921.51.50.00 (other).
The general (MFN) duty is 6.5% on all 4 lines.
- 2921.51.10.004-Amino-2-(N,N-diethylamino) toluene hydrochloride;m-Phenylenediamine;o-Phenylenediamine; Toluene-2,4-diamine; Toluene-2,5-diamine; and Toluene-2,5-diamine sulfateDuty: 6.5%
- 2921.51.20.00Photographic chemicalsDuty: 6.5%
- 2921.51.30.00Products described in additional U.S. note 3 to section VIDuty: 6.5%
- 2921.51.50.00OtherDuty: 6.5%
In other countries
No other national tariff on border.bot has live lines under 2921.51 yet.
Frequently asked questions
How many national tariff lines does the United States tariff have under HS 2921.51?
The United States tariff splits HS 2921.51 (aromatic polyamines and their derivatives; salts thereof: o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof) into 4 national lines: 2921.51.10.00 (4-Amino-2-(N,N-diethylamino) toluene hydrochloride;m-Phenylenediamine;o-Phenylenediamine; Toluene-2,4-diamine; Toluene-2,5-diamine; and Toluene-2,5-diamine sulfate), 2921.51.20.00 (photographic chemicals), 2921.51.30.00 (products described in additional U.S. note 3 to section VI) and 2921.51.50.00 (other).
What is the duty on HS 2921.51 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: