# United States tariff line 2510.10.00.00: Unground

> In the United States tariff, line 2510.10.00.00 covers unground. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2510.10 in heading 25.10 (chapter 25).

Source: https://border.bot/countries/united-states/hs-codes/2510100000
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 25](https://border.bot/countries/united-states/hs-codes/25) / [2510.10](https://border.bot/countries/united-states/hs-codes/251010) / [2510.10.00.00](https://border.bot/countries/united-states/hs-codes/2510100000)

## Key facts

- Tariff line: 2510.10.00.00
- Covers: Unground
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2510.10](https://border.bot/hs-codes/251010)

## What this line covers

In the United States tariff, line 2510.10.00.00 covers unground.

Its legal text is “Unground”.

## How it is structured

It falls under HS subheading 2510.10 in heading 25.10 (chapter 25). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 25: Salt; sulphur; earths and stone; plastering materials, lime and cement
- Heading 25.10: Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk
- Line 2510.10.00.00: Unground

## Duty

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

## In other countries

No other national tariff on border.bot has live lines under 2510.10 yet.

- [The Harmonized System text for 2510.10](https://border.bot/hs-codes/251010)

- Previous line: [2509.00.20.00](https://border.bot/countries/united-states/hs-codes/2509002000) Other
- Next line: [2510.20.00.00](https://border.bot/countries/united-states/hs-codes/2510200000) Ground

## Frequently asked questions

### What does tariff line 2510.10.00.00 cover in the United States tariff?

In the United States tariff, line 2510.10.00.00 covers unground.

### What is the general (MFN) duty on 2510.10.00.00 in the United States?

Goods under this line enter 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/2510100000.json