# United States tariff line 3105.90.00.10: Potassium nitrate-sodium nitrate mixtures

> In the United States tariff, line 3105.90.00.10 covers potassium nitrate-sodium nitrate mixtures. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 3105.90 in heading 31.05 (chapter 31).

Source: https://border.bot/countries/united-states/hs-codes/3105900010
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 31](https://border.bot/countries/united-states/hs-codes/31) / [3105.90](https://border.bot/countries/united-states/hs-codes/310590) / [3105.90.00.10](https://border.bot/countries/united-states/hs-codes/3105900010)

## Key facts

- Tariff line: 3105.90.00.10
- Covers: Potassium nitrate-sodium nitrate mixtures
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [3105.90](https://border.bot/hs-codes/310590)

## What this line covers

In the United States tariff, line 3105.90.00.10 covers potassium nitrate-sodium nitrate mixtures.

Its legal text is “Potassium nitrate-sodium nitrate mixtures”, read under “Other”.

## How it is structured

It falls under HS subheading 3105.90 in heading 31.05 (chapter 31). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 31: Fertilisers
- Heading 31.05: Mineral or chemical fertilizers containing two or three of the fertilizing elements nitrogen, phosphorus and potassium; other fertilizers; goods of this chapter in tablets or similar forms or in packages of a gross weight not exceeding 10 kg
- Subheading 3105.90: Other
- Line 3105.90.00.10: Potassium nitrate-sodium nitrate mixtures

## Duty

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

The rate is published on 3105.90.00.

## In other countries

No other national tariff on border.bot has live lines under 3105.90 yet.

- [The Harmonized System text for 3105.90](https://border.bot/hs-codes/310590)

## Other lines under 3105.90

- [3105.90.00.50](https://border.bot/countries/united-states/hs-codes/3105900050) Other

- Previous line: [3105.60.00.00](https://border.bot/countries/united-states/hs-codes/3105600000) Mineral or chemical fertilizers containing the two fertilizing elements phosphorus and potassium
- Next line: [3105.90.00.50](https://border.bot/countries/united-states/hs-codes/3105900050) Other

## Frequently asked questions

### What does tariff line 3105.90.00.10 cover in the United States tariff?

In the United States tariff, line 3105.90.00.10 covers potassium nitrate-sodium nitrate mixtures.

### What is the general (MFN) duty on 3105.90.00.10 in the United States?

Goods under this line enter free of general (MFN) duty. The rate is published on 3105.90.00.

## 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/3105900010.json