Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals
2925.29.70.00Tariff line
Classification path
Carboxyimide-function compounds (including saccharin and its salts) and imine-function compounds
2925
Imines and their derivatives; salts thereof
Other
Other
Tetramethylguanidine
2925.29.70.00
Rates of duty
General rate (Column 1)Free
Special—
Column 225%
Unitkg
Printed page 1523
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 4A (9903.88.15)9903.88.15Applies+7.5%8-digit subheading 2925.29.70 is on L4A
- PGAEPA EP7
Confirmed total 20% · max 20%Full duty breakdown →