HS 3815 — Reaction initiators, reaction accelerators and catalytic preparations
HS heading 3815 (Reaction initiators, reaction accelerators and catalytic preparations) spans 4 products in U.S. import records, with 19,120 bill-of-lading shipments. The most imported are With precious metal or precious metal compounds as the active substance, Supported catalysts, other, and Reaction initiators, reaction accelerators and catalytic preparations, other.
Part of Chapter 38: Miscellaneous chemical products
Sourced from U.S. Customs bill of lading data · Updated monthly · Data through August 2026Cite as: ImportDoor, U.S. Customs bill of lading data (data through August 2026), https://www.importdoor.com/products/heading/3815
Products under this heading
| HS | Product | Shipments |
|---|---|---|
| 381512 | With precious metal or precious metal compounds as the active substance | 7,814 |
| 381519 | Supported catalysts, other | 6,382 |
| 381590 | Reaction initiators, reaction accelerators and catalytic preparations, other | 4,222 |
| 381511 | With nickel or nickel compounds as the active substance | 702 |
Frequently asked questions about HS 3815
What is HS code 3815?
HS 3815 covers reaction initiators. It is a 4-digit heading in chapter 38 (Miscellaneous chemical products) of the Harmonized System, with 4 six-digit subheadings that appear in U.S. import records.
How many U.S. import shipments fall under HS 3815?
ImportDoor has 19,120 U.S. Customs bill-of-lading shipment records under HS heading 3815, updated monthly.
What is the most imported product under HS 3815?
With precious metal or precious metal compounds as the active substance (HS 381512) leads with 7,814 shipments, followed by Supported catalysts (HS 381519) and Reaction initiators (HS 381590).