United States tariff line 2921.19.31.00: 3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride
Last updated
Key facts
- Tariff line
- 2921.19.31.00
- Covers
- Acyclic monoamines and their derivatives; salts thereof, 3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride
- Duty (MFN)
- Free
- Additional duties
- None recorded
- Restrictions
- None recorded
- Tariff
- United States
- HS subheading
- 2921.19
Summary
In the United States tariff, line 2921.19.31.00 covers acyclic monoamines and their derivatives; salts thereof, 3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2921.19 in heading 29.21 (chapter 29).
What this line covers
In the United States tariff, line 2921.19.31.00 covers acyclic monoamines and their derivatives; salts thereof, 3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride.
Its legal text is “3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride”, read under “Acyclic monoamines and their derivatives; salts thereof” and “Other”.
How it is structured
It falls under HS subheading 2921.19 in heading 29.21 (chapter 29). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.
- Chapter 29
- Organic chemicals
- Heading 29.21
- Amine-function compounds
- Subheading 2921.19
- Acyclic monoamines and their derivatives; salts thereof
- Within the subheading
- Other
- Line 2921.19.31.00
- 3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride
Duty
Goods under this line enter free of general (MFN) duty.
Other lines under 2921.19
- 2921.19.11.00Mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any of the foregoing
- 2921.19.61.10N,N-Dialkyl (methyl, ethyl or n-propyl)-2-chloroethylamines and their protonated salts
- 2921.19.61.20Bis(2-chloroethyl)ethylamine)
- 2921.19.61.30Chlormethine (INN) (bis(2-chloroethyl)methylamine)
- 2921.19.61.40Trichlormethine (INN) (tris(2-chloroethyl)amine)
- 2921.19.61.95Other
In other countries
No other national tariff on border.bot has live lines under 2921.19 yet.
Frequently asked questions
What does tariff line 2921.19.31.00 cover in the United States tariff?
In the United States tariff, line 2921.19.31.00 covers acyclic monoamines and their derivatives; salts thereof, 3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride.
What is the general (MFN) duty on 2921.19.31.00 in the United States?
Goods under this line enter free of general (MFN) duty.
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: