3815.90—Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included, other
General duty rate
Free – 6.5%
Across 4 10-digit lines; pick a line below for the exact rate
Coverage on this page
Up one level: 3815 — Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: (heading)
Plain-English explanation
HTS 3815.90 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included, other. It sits in Chapter 38: Miscellaneous chemical products, Section VI: Products of the Chemical or Allied Industries and rolls up 4 10-digit statistical lines, with general duty rates ranging from Free to 6.5%. No Chapter 99 tariff modifications or AD/CVD orders currently flag any line under this subheading in Tandom's catalog.
10-digit lines under 3815.90(4)
Pick a line to view full rate detail and compute landed duty
Frequently asked questions
What does HTS 3815.90 cover?
HTS 3815.90 is a 6-digit subheading of the U.S. Harmonized Tariff Schedule covering Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included, other. It belongs to Chapter 38 and rolls up 4 10-digit statistical lines that brokers actually file at entry.
What is the duty rate for HTS 3815.90?
General (Column 1) duty rates for the 10-digit lines under HTS 3815.90 range from Free to 6.5%. The exact rate depends on the specific 10-digit statistical line — pick a line below to see its full rate detail.
How do I find the right 10-digit line under HTS 3815.90?
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader subheading HTS 3815.90 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
Are there AD/CVD orders affecting HTS 3815.90?
Learn more
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