3815
4-digit headingReaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included
This is a 4-digit heading — a category, not a filing code. Pick the more specific code beneath it that best matches your goods; only a 10-digit statistical code can be used on a customs entry.
Duty rates
No rate is published at this level — check the specific 10-digit statistical code beneath it.
| Rate | Value and what it means |
|---|---|
| General rate (Column 1) | See 10-digit codeColumn 1 general Applies to most trading partners — the standard "normal trade relations" rate. |
| Special rate (Column 1) | —Trade programs The country letters in parentheses are free trade agreement and preference programs. If your goods qualify under one of them, that rate replaces the general rate. |
| Column 2 rate | —Non-NTR Reserved for the small group of countries that do not have normal trade relations with the US (currently Cuba, North Korea, Russia and Belarus). Almost no importer uses this column — if you are shipping from anywhere else, ignore it. |
| Unit of quantity | — How CBP expects the quantity to be reported on the entry summary. |
Codes within Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included
10 more specific lines fall under 3815.
- 3815.11.00.00With nickel or nickel compounds as the active substance10-digit statistical codeReaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: > Supported catalysts:Free
- 3815.12.00With precious metal or precious metal compounds as the active substance8-digit subheadingReaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: > Supported catalysts:Free
- 3815.12.00.10With platinum group metals as the active substance10-digit statistical codeReaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: > Supported catalysts: > With precious metal or precious metal compounds as the active substance
- 3815.12.00.90Other10-digit statistical codeReaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: > Supported catalysts: > With precious metal or precious metal compounds as the active substance
- 3815.19.00.00Other10-digit statistical codeReaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: > Supported catalysts:Free
- 3815.90Other6-digit headingReaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included:
- 3815.90.10.00Of bismuth, of tungsten or of vanadium10-digit statistical codeReaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: > Other: > Consisting wholly of inorganic substances:6.5%
- 3815.90.20.00Of mercury or of molybdenum10-digit statistical codeReaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: > Other: > Consisting wholly of inorganic substances:2.8%
- 3815.90.30.00Other10-digit statistical codeReaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: > Other: > Consisting wholly of inorganic substances:Free
- 3815.90.50.00Other10-digit statistical codeReaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included: > Other:5%
Chapter 38: Miscellaneous Chemical Products
Browse every code in this chapter to compare neighbouring classifications.
View Chapter 38Source: USITC Harmonized Tariff Schedule, 2026 Basic Edition, Revision 16. Rate text is reproduced verbatim from the official export; category paths and duty estimates are derived.
Data loaded August 18, 2026.Check this chapter on hts.usitc.govReport an error with this codeHow this data is built