# United States tariff lines under HS 2512.00

> The United States tariff splits HS 2512.00 (siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less) into 1 national line: 2512.00.00.00 (siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less). Every United States line under 2512.00 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/251200
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) / [2512.00](https://border.bot/countries/united-states/hs-codes/251200)

## Key facts

- HS subheading: [2512.00](https://border.bot/hs-codes/251200)
- Duty (MFN): Free
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 25: Salt; sulphur; earths and stone; plastering materials, lime and cement

## United States lines under 2512.00

The United States tariff splits HS 2512.00 (siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less) into 1 national line: 2512.00.00.00 (siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less).

Every United States line under 2512.00 is free of general (MFN) duty.

- [2512.00.00.00](https://border.bot/countries/united-states/hs-codes/2512000000) Siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 2512.00 yet.

- [The Harmonized System text for 2512.00](https://border.bot/hs-codes/251200)

- Previous subheading: [2511.20](https://border.bot/countries/united-states/hs-codes/251120) Natural barium sulfate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 2816
- Next subheading: [2513.10](https://border.bot/countries/united-states/hs-codes/251310) Pumice; emery; natural corundum, natural garnet and other natural abrasives, whether or not heat-treated

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2512.00?

The United States tariff splits HS 2512.00 (siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less) into 1 national line: 2512.00.00.00 (siliceous fossil meals (for example, kieselguhr, tripolite and diatomite) and similar siliceous earths, whether or not calcined, of an apparent specific gravity of 1 or less).

### What is the duty on HS 2512.00 in the United States?

Every United States line under 2512.00 is 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/251200.json