# HS code 2529.21: Fluorspar, containing by weight 97 % or less of calcium fluoride

> HS code 2529.21 covers fluorspar, containing by weight 97 % or less of calcium fluoride. It sits in heading 25.29 (feldspar; leucite, nepheline and nepheline syenite; fluorspar) in chapter 25 (salt; sulphur; earths and stone; plastering materials, lime and cement). Other goods of heading 25.29 are classified under 2529.10 (feldspar), 2529.22 (fluorspar, containing by weight more than 97 % of calcium fluoride) or 2529.30 (leucite; nepheline and nepheline syenite).

Source: https://staging.border.bot/hs-codes/252921
Last updated: 13 October 2026

[HS codes](https://staging.border.bot/hs-codes) / [Chapter 25](https://staging.border.bot/hs-codes/25) / [25.29](https://staging.border.bot/hs-codes/2529) / [2529.21](https://staging.border.bot/hs-codes/252921)

## Key facts

- HS code: 2529.21
- Covers: Fluorspar, containing by weight 97 % or less of calcium fluoride
- Heading: [25.29: Feldspar; leucite, nepheline and nepheline syenite; fluorspar](https://staging.border.bot/hs-codes/2529)
- Chapter: [25: Salt; sulphur; earths and stone; plastering materials, lime and cement](https://staging.border.bot/hs-codes/25)
- Edition: HS2022
- Duty rates: [Set by each country’s tariff](https://staging.border.bot/countries)

## What this code covers

HS code 2529.21 covers fluorspar, containing by weight 97 % or less of calcium fluoride.

The legal text of the subheading is “Fluorspar: Containing by weight 97 % or less of calcium fluoride”, read under “Fluorspar”, in HS2022.

## What it doesn’t cover

Other goods of heading 25.29 are classified under 2529.10 (feldspar), 2529.22 (fluorspar, containing by weight more than 97 % of calcium fluoride) or 2529.30 (leucite; nepheline and nepheline syenite).

- [2529.10](https://staging.border.bot/hs-codes/252910) Feldspar
- [2529.22](https://staging.border.bot/hs-codes/252922) Fluorspar: Containing by weight more than 97 % of calcium fluoride
- [2529.30](https://staging.border.bot/hs-codes/252930) Leucite; nepheline and nepheline syenite

## How it is structured

2529.21 is a six-digit subheading. Its first two digits, 25, are the chapter; the first four, 2529, are heading 25.29; the last two, 21, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 25: Salt; sulphur; earths and stone; plastering materials, lime and cement
- Heading 25.29: Feldspar; leucite, nepheline and nepheline syenite; fluorspar
- Within the heading: Fluorspar
- Subheading 2529.21: Containing by weight 97 % or less of calcium fluoride

## In other countries

No national tariff lines under 2529.21 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 2529.21 at six digits and add their own digits after it.

- Previous subheading: [2529.10](https://staging.border.bot/hs-codes/252910) Feldspar
- Next subheading: [2529.22](https://staging.border.bot/hs-codes/252922) Fluorspar: Containing by weight more than 97 % of calcium fluoride

## Frequently asked questions

### What does HS code 2529.21 cover?

HS code 2529.21 covers fluorspar, containing by weight 97 % or less of calcium fluoride.

### Which heading and chapter is HS code 2529.21 in?

HS code 2529.21 is in heading 25.29 (feldspar; leucite, nepheline and nepheline syenite; fluorspar) in chapter 25 (salt; sulphur; earths and stone; plastering materials, lime and cement).

### Where are goods of heading 25.29 classified when 2529.21 doesn’t fit?

Other goods of heading 25.29 are classified under 2529.10 (feldspar), 2529.22 (fluorspar, containing by weight more than 97 % of calcium fluoride) or 2529.30 (leucite; nepheline and nepheline syenite).

## Sources and updates

The Harmonized System legal text comes from border.bot release 1 (edition HS 2022), imported from a file, and has been live since 13 October 2026.

This page was last updated on 13 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.

Machine-readable: https://staging.border.bot/hs-codes/252921.json