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Data: HTSUS Rev.21 · 2026-10-25.12PrivacyAI-generated suggestion based on HTSUS text, not legal advice. Final classification rests with CBP rulings or licensed advice; the importer of record is responsible for the entry.

Harmonized Tariff Schedule of the U.S. › Chapter 38 Miscellaneous chemical products

3815.19.00.00Tariff line

Classification path

Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included
3815
Supported catalysts
Other
3815.19.00.00

Rates of duty

General rate (Column 1)Free
Special—
Column 225%
Unitkg

Printed page 1669

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 3815.19.00 is on L3
  • 301 exclusion 9903.88.69 (by product description)9903.88.69ConditionalexemptSupported catalysts for polymerization — only the products described; expires 2026-11-09 11:59 p.m. EDT
  • 301 exclusion 9903.88.69 (by product description)9903.88.69ConditionalexemptSupported catalysts of copper oxide or zinc oxide as the active ingredients for arsine removal — only the products described; expires 2026-11-09 11:59 p.m. EDT
  • 301 exclusion 9903.88.69 (by product description)9903.88.69ConditionalexemptSupported catalysts with copper carbonate or zinc carbonate as the active ingredients for low temperature desulfurization — only the products described; expires 2026-11-09 11:59 p.m. EDT
  • 301 exclusion 9903.88.69 (by product description)9903.88.69ConditionalexemptSupported catalysts with metal sulfide as the active substance for mercury removal — only the products described; expires 2026-11-09 11:59 p.m. EDT
  • 301 exclusion 9903.88.69 (by product description)9903.88.69ConditionalexemptSupported catalysts with molybdenum compounds as the active substance for hydrogenation — only the products described; expires 2026-11-09 11:59 p.m. EDT
  • 301 exclusion 9903.88.69 (by product description)9903.88.69ConditionalexemptSupported catalysts with zinc oxide as the active substance — only the products described; expires 2026-11-09 11:59 p.m. EDT
  • PGAEPA EP7

Confirmed total 37.5% · max 37.5%Full duty breakdown →

U.S. → China →