Harmonized Tariff Schedule of the U.S. › Chapter 28 Inorganic chemicals; compounds of precious metals, rare-earth metals, radioactive elements or isotopes
2836.50.00.00Tariff line
Classification path
Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate
2836
Calcium carbonate
2836.50.00.00
Rates of duty
General rate (Column 1)Free
Special—
Column 225%
Unitkg
Printed page 1410
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 2836.50.00 is on L3
- PGAFDA FD3EPA EP5EPA EP7
Confirmed total 37.5% · max 37.5%Full duty breakdown →