# United States tariff line 2815.20.00.90: Other

> In the United States tariff, line 2815.20.00.90 covers potassium hydroxide (Caustic potash). Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2815.20 in heading 28.15 (chapter 28).

Source: https://border.bot/countries/united-states/hs-codes/2815200090
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 28](https://border.bot/countries/united-states/hs-codes/28) / [2815.20](https://border.bot/countries/united-states/hs-codes/281520) / [2815.20.00.90](https://border.bot/countries/united-states/hs-codes/2815200090)

## Key facts

- Tariff line: 2815.20.00.90
- Covers: Potassium hydroxide (Caustic potash)
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2815.20](https://border.bot/hs-codes/281520)

## What this line covers

In the United States tariff, line 2815.20.00.90 covers potassium hydroxide (Caustic potash).

Its legal text is “Other”, read under “Potassium hydroxide (Caustic potash)”.

## How it is structured

It falls under HS subheading 2815.20 in heading 28.15 (chapter 28). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
- Heading 28.15: Sodium hydroxide (Caustic soda); potassium hydroxide (Caustic potash); peroxides of sodium or potassium
- Subheading 2815.20: Potassium hydroxide (Caustic potash)
- Line 2815.20.00.90: Other

## Duty

Goods under this line enter free of general (MFN) duty.

The rate is published on 2815.20.00.

## In other countries

No other national tariff on border.bot has live lines under 2815.20 yet.

- [The Harmonized System text for 2815.20](https://border.bot/hs-codes/281520)

## Other lines under 2815.20

- [2815.20.00.50](https://border.bot/countries/united-states/hs-codes/2815200050) In solid form

- Previous line: [2815.20.00.50](https://border.bot/countries/united-states/hs-codes/2815200050) In solid form
- Next line: [2815.30.00.00](https://border.bot/countries/united-states/hs-codes/2815300000) Peroxides of sodium or potassium

## Frequently asked questions

### What does tariff line 2815.20.00.90 cover in the United States tariff?

In the United States tariff, line 2815.20.00.90 covers potassium hydroxide (Caustic potash).

### What is the general (MFN) duty on 2815.20.00.90 in the United States?

Goods under this line enter free of general (MFN) duty. The rate is published on 2815.20.00.

## 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/2815200090.json