# United States tariff lines under HS 3815.19

> The United States tariff splits HS 3815.19 (supported catalysts: Other) into 1 national line: 3815.19.00.00 (other). Every United States line under 3815.19 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/381519
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 38](https://border.bot/countries/united-states/hs-codes/38) / [3815.19](https://border.bot/countries/united-states/hs-codes/381519)

## Key facts

- HS subheading: [3815.19](https://border.bot/hs-codes/381519)
- Duty (MFN): Free
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 38: Miscellaneous chemical products

## United States lines under 3815.19

The United States tariff splits HS 3815.19 (supported catalysts: Other) into 1 national line: 3815.19.00.00 (other).

Every United States line under 3815.19 is free of general (MFN) duty.

- [3815.19.00.00](https://border.bot/countries/united-states/hs-codes/3815190000) Supported catalysts, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 3815.19 yet.

- [The Harmonized System text for 3815.19](https://border.bot/hs-codes/381519)

- Previous subheading: [3815.12](https://border.bot/countries/united-states/hs-codes/381512) Reaction initiators, reaction accelerators and catalytic preparations, not elsewhere specified or included
- Next subheading: [3815.90](https://border.bot/countries/united-states/hs-codes/381590) Other

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 3815.19?

The United States tariff splits HS 3815.19 (supported catalysts: Other) into 1 national line: 3815.19.00.00 (other).

### What is the duty on HS 3815.19 in the United States?

Every United States line under 3815.19 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/381519.json