# United States tariff line 2518.10.00.00: Dolomite, not calcined or sintered

> In the United States tariff, line 2518.10.00.00 covers dolomite, not calcined or sintered. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2518.10 in heading 25.18 (chapter 25).

Source: https://border.bot/countries/united-states/hs-codes/2518100000
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) / [2518.10](https://border.bot/countries/united-states/hs-codes/251810) / [2518.10.00.00](https://border.bot/countries/united-states/hs-codes/2518100000)

## Key facts

- Tariff line: 2518.10.00.00
- Covers: Dolomite, not calcined or sintered
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2518.10](https://border.bot/hs-codes/251810)

## What this line covers

In the United States tariff, line 2518.10.00.00 covers dolomite, not calcined or sintered.

Its legal text is “Dolomite, not calcined or sintered”.

## How it is structured

It falls under HS subheading 2518.10 in heading 25.18 (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 25.18: Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape
- Line 2518.10.00.00: Dolomite, not calcined or sintered

## 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 2518.10 yet.

- [The Harmonized System text for 2518.10](https://border.bot/hs-codes/251810)

- Previous line: [2517.49.00.00](https://border.bot/countries/united-states/hs-codes/2517490000) Other
- Next line: [2518.20.00.00](https://border.bot/countries/united-states/hs-codes/2518200000) Calcined or sintered dolomite

## Frequently asked questions

### What does tariff line 2518.10.00.00 cover in the United States tariff?

In the United States tariff, line 2518.10.00.00 covers dolomite, not calcined or sintered.

### What is the general (MFN) duty on 2518.10.00.00 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/2518100000.json