Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals
2921.19.31.00Tariff line
Classification path
Amine-function compounds
2921
Acyclic monoamines and their derivatives; salts thereof
Other
3-Amino-3-methyl-1-butyne; (Dimethylamino)isopropyl chloride hydrochloride
2921.19.31.00
Rates of duty
General rate (Column 1)Free
Special—
Column 230.5%
Unitkg
Printed page 1494
Measure flags
for origin CN, entry date 2026-10-26 · base rate Free
- Section 301 forced-labor tariff (12.5%)9903.05.31Applies+12.5%China: Column 1 rate + 12.5% additional
- China 301 List 3 (9903.88.03)9903.88.03Applies+25%8-digit subheading 2921.19.31 is on L3
- PGAEPA EP7
Confirmed total 37.5% · max 37.5%Full duty breakdown →