Heading 3815: Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included
In chapter 38, Miscellaneous chemical products. 7 rate lines, laid out as HTS Revision 20 (2026) prints them.
| HTS number | Description | Units | General | Special | Column 2 |
|---|---|---|---|---|---|
| 3815 | Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: | ||||
| Supported catalysts: | |||||
| 3815.11.00.00 | With nickel or nickel compounds as the active substance | kg | Free | 25% | |
| 3815.12.00 | With precious metal or precious metal compounds as the active substance | Free | 25% | ||
| 3815.12.00.10 | With platinum group metals as the active substance | kg | |||
| 3815.12.00.90 | Other | kg | |||
| 3815.19.00.00 | Other | kg | Free | 25% | |
| 3815.90 | Other: | ||||
| Consisting wholly of inorganic substances: | |||||
| 3815.90.10.00 | Of bismuth, of tungsten or of vanadium | kg | 6.5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 40% |
| 3815.90.20.00 | Of mercury or of molybdenum | kg | 2.8% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 18% |
| 3815.90.30.00 | Other | kg | Free | 25% | |
| 3815.90.50.00 | Other | kg | 5% | Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) | 25% |
Rates are quoted as printed. Each 8-digit number opens its own page with footnotes and cited chapter 99 headings.
Watch lines in heading 3815
Pick the 8 or 10 digit numbers you import and we email you the old and new text whenever a new HTS revision changes them.
See the alert plansChapter 99 headings cited in this heading
- 9903.90.08 cited by 1 line
What this page leaves to your broker
This page quotes the schedule. It does not add the rates together, and it does not say whether a chapter 99 heading applies to a shipment: that turns on the country of origin, the dates and the U.S. notes to chapter 99. Section 301, Section 232 and other chapter 99 measures list the goods they cover in those notes and in Federal Register notices, so a line can be covered by a heading its footnotes never cite. A licensed customs broker makes the determination.
Built September 29, 2026 from HTS Revision 20 (2026) (USITC release 2026HTSRev20, published September 23, 2026, current since September 28, 2026). The schedule changes often; USITC's own site always has the current text.