Harmonized Tariff Schedule of the U.S. › Chapter 31 Fertilisers
3102.21.00.00Tariff line
Classification path
Mineral or chemical fertilizers, nitrogenous
3102
Ammonium sulfate; double salts and mixtures of ammonium sulfate and ammonium nitrate
Ammonium sulfate
3102.21.00.00
Rates of duty
General rate (Column 1)Free
Special—
Column 2Free
Unitt
Printed page 1599
Measure flags
for origin CN, entry date 2026-10-26 · base rate Free
- Section 301 forced-labor tariff (12.5%)9903.05.86ExemptexemptOn the note 52(b) general exemption list (exempt by HTS line; enter under 9903.05.86)
- China 301 List 3 (9903.88.03)9903.88.03Applies+25%8-digit subheading 3102.21.00 is on L3
- AD/CVD: 2 orders in placeConditional—Cash deposits follow the company-specific rate (ACE case module). Coverage depends on each order's scope. The table below lists case numbers, status and the all-others rate. The all-others deposit rate is counted in the maximum exposure, not in the confirmed total.
- AD/CVD 2 casesConditionalAD 493.46% + CVD 206.72%A570049 / C570050
- PGAEPA EP7
Confirmed total 25% · max 725.18%Full duty breakdown →