HTSUS, United States
2921.19.31.00
3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride
Classification path
- Amine-function compounds
- Acyclic monoamines and their derivatives; salts thereof
- Other
- 3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride
Rates of duty
- General (MFN)
- Free
- Column 2Cuba, North Korea, Russia, Belarus
- 30.5%
- Unit of quantity
- kg
Related lines in heading 2921
- 2921.11.00.00Methylamine, di- or trimethylamine and their salts3.7%
- 2921.12.01.002-(N,N-Dimethylamino)ethyl chloride hydrochlorideFree
- 2921.13.00.002-(N,N-Diethylamino)ethyl chloride hydrochlorideFree
- 2921.14.00.002-(N,N,-Diisopropylamino)ethyl chloride hydrochloride6.5%
- 2921.19.11.00Mono-, di- and triethylamines;mono-, di-, and tri-(propyl- and butyl-)monoamines; salts of any of the foregoing3.7%
- 2921.19.61.10N,N-Dialkyl (methyl, ethyl or n-propyl)-2-chloroethylamines and their protonated salts6.5%
- 2921.19.61.20Acyclic monoamines and their derivatives; salts thereof / Bis(2-chloroethyl)ethylamine)6.5%
- 2921.19.61.30Chlormethine (INN) (bis(2-chloroethyl)methylamine)6.5%
- 2921.19.61.40Trichlormethine (INN) (tris(2-chloroethyl)amine)6.5%
- 2921.19.61.95Acyclic monoamines and their derivatives; salts thereof / Other6.5%
- 2921.21.00.00Acyclic polyamines and their derivatives; salts thereof / Ethylenediamine and its salts5.8%
- 2921.22.05.00Hexamethylenediamine adipate (Nylon salt)6.5%
About heading 2921
Amine-function compounds
Heading 2921 covers amine-function compounds. It is split first by structure into acyclic monoamines, acyclic polyamines, cyclanic, cyclenic or cycloterpenic amines, aromatic monoamines and aromatic polyamines, then by named compounds or Other lines.
Full guide to heading 2921Products in this heading
- Methylamine and dimethylamine
- Ethylenediamine
- Hexamethylenediamine
- Aniline
- N,N-Dimethylaniline
- Diphenylamine
- Toluene-2,4-diamine
Frequently asked questions
What is the HTS code for aniline?
Aniline is classified under 2921.41.10.00, with a general (MFN) rate of 6.5%.
What is the duty on ethylenediamine?
Ethylenediamine and its salts are classified under 2921.21.00.00, with a general (MFN) rate of 5.8%.
How do I classify hexamethylenediamine nylon salt?
Hexamethylenediamine adipate (Nylon salt) is classified under 2921.22.05.00, with a general (MFN) rate of 6.5%.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.