Harmonized Tariff Schedule of the U.S. › Chapter 29 Organic chemicals
2931.90.90.10Tariff line
Classification path
Other organo-inorganic compounds
2931
Other
Other
Other
Organo-silicon compounds
2931.90.90.10
Rates of duty
General rate (Column 1)3.7%
SpecialFree (A*, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)
Column 225%
Unitkg
Free (A*, AU, BH, CL, CO, D, E, IL, JO, K, KR, MA, OM, P, PA, PE, S, SG)
Printed page 1539
Measure flags
for origin CN, entry date 2026-10-25 · base rate 3.7%
- Section 301 forced-labor tariff (12.5%)9903.05.31Applies+12.5%China: Column 1 rate + 12.5% additional
- China 301 L3-partial9903.88.04Applies+25%8-digit subheading 2931.90.90 is on L3-partial
- 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 167.58% + CVD 2.4%A570045 / C570046
- PGAEPA EP5EPA EP7
Confirmed total 41.2% · max 211.18%Full duty breakdown →