Harmonized Tariff Schedule of the U.S. › Chapter 38 Miscellaneous chemical products
3815.90.20.00Tariff line
Classification path
Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included
3815
Other
Consisting wholly of inorganic substances
Of mercury or of molybdenum
3815.90.20.00
Rates of duty
General rate (Column 1)2.8%
SpecialFree (A, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG)
Column 218%
Unitkg
Free (A, AU, BH, CL, CO, D, E, IL, JO, KR, MA, OM, P, PA, PE, S, SG)
Printed page 1669
Measure flags
for origin CN, entry date 2026-10-26 · base rate 2.8%
- 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 3815.90.20 is on L3
Confirmed total 40.3% · max 40.3%Full duty breakdown →