# United States tariff lines under HS 2510.20

> The United States tariff splits HS 2510.20 (natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk, ground) into 1 national line: 2510.20.00.00 (ground). Every United States line under 2510.20 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/251020
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) / [2510.20](https://border.bot/countries/united-states/hs-codes/251020)

## Key facts

- HS subheading: [2510.20](https://border.bot/hs-codes/251020)
- 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 2510.20

The United States tariff splits HS 2510.20 (natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk, ground) into 1 national line: 2510.20.00.00 (ground).

Every United States line under 2510.20 is free of general (MFN) duty.

- [2510.20.00.00](https://border.bot/countries/united-states/hs-codes/2510200000) Ground. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 2510.20 yet.

- [The Harmonized System text for 2510.20](https://border.bot/hs-codes/251020)

- Previous subheading: [2510.10](https://border.bot/countries/united-states/hs-codes/251010) Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk
- Next subheading: [2511.10](https://border.bot/countries/united-states/hs-codes/251110) Natural barium sulfate (barytes)

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2510.20?

The United States tariff splits HS 2510.20 (natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk, ground) into 1 national line: 2510.20.00.00 (ground).

### What is the duty on HS 2510.20 in the United States?

Every United States line under 2510.20 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/251020.json