# United States tariff lines under HS 2839.90

> The United States tariff splits HS 2839.90 (silicates; commercial alkali metal silicates) into 2 national lines: 2839.90.10.00 (of potassium) and 2839.90.50.00 (other). The general (MFN) duty is 3.1% on all 2 lines.

Source: https://border.bot/countries/united-states/hs-codes/283990
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) / [2839.90](https://border.bot/countries/united-states/hs-codes/283990)

## Key facts

- HS subheading: [2839.90](https://border.bot/hs-codes/283990)
- Duty (MFN): 3.1%
- National lines: 2
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

## United States lines under 2839.90

The United States tariff splits HS 2839.90 (silicates; commercial alkali metal silicates) into 2 national lines: 2839.90.10.00 (of potassium) and 2839.90.50.00 (other).

The general (MFN) duty is 3.1% on all 2 lines.

- [2839.90.10.00](https://border.bot/countries/united-states/hs-codes/2839901000) Other, Of potassium. Duty (MFN): 3.1%
- [2839.90.50.00](https://border.bot/countries/united-states/hs-codes/2839905000) Other, Other. Duty (MFN): 3.1%

## In other countries

No other national tariff on border.bot has live lines under 2839.90 yet.

- [The Harmonized System text for 2839.90](https://border.bot/hs-codes/283990)

- Previous subheading: [2839.19](https://border.bot/countries/united-states/hs-codes/283919) Silicates; commercial alkali metal silicates
- Next subheading: [2840.11](https://border.bot/countries/united-states/hs-codes/284011) Borates; peroxoborates (perborates)

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2839.90?

The United States tariff splits HS 2839.90 (silicates; commercial alkali metal silicates) into 2 national lines: 2839.90.10.00 (of potassium) and 2839.90.50.00 (other).

### What is the duty on HS 2839.90 in the United States?

The general (MFN) duty is 3.1% on all 2 lines.

## 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/283990.json