HS code 381590: Reaction Initiators
- Covers:
- Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere… not listed under the other codes in this heading.
- Not covered:
- 381511 (Supported catalysts — With nickel or nickel…); 381512 (Supported catalysts — With precious metal or…); 381519 (Supported catalysts — Other).
- Listed US duty:
- 0%–6.5% (US general rate, HTS 2026)
Official description
Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included : Other
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Suggestions from the HS index, not a customs ruling
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What 381590 covers and what it doesn’t
Official text: Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included › Other.
This is the “other” line of heading 3815 (reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included). It takes goods of that heading that no more specific subheading names. These go elsewhere:
Nearby codes to check
- Heading 3815 Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: every subheading side by side.
US duty rate
0%–6.5%
General (MFN) rate in the US Harmonized Tariff Schedule, 2026 edition. A range means the rate depends on the 8-digit US line your product falls under. Extra duties such as Section 301, Section 232 or anti-dumping orders can apply on top, depending on origin. Check the lines on hts.usitc.gov. Not legal advice.
Who imports under 381590
EximAgent lists companies with recorded shipments under this code, built from customs records, with who they buy from and how often. See importers of 381590 →
Common questions
- What is HS code 381590?
- Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included : Other
- What duty rates apply to 381590?
- Listed US duty: 0%–6.5% (US general rate, HTS 2026).
Browse all of Chapter 38: Miscellaneous chemical products →
Go beyond the code
Classify a product and check the duty for your destination with the CLI, then keep researching in your own agent.