# HS code 2852.10: Chemically defined

> HS code 2852.10 covers chemically defined. It sits in heading 28.52 (inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams) in chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes). Other goods of heading 28.52 are classified under 2852.90 (other). National tariff lines under 2852.10 are live on border.bot for the United States (2 lines, also used by 1 other country).

Source: https://border.bot/hs-codes/285210
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 28](https://border.bot/hs-codes/28) / [28.52](https://border.bot/hs-codes/2852) / [2852.10](https://border.bot/hs-codes/285210)

## Key facts

- HS code: 2852.10
- Covers: Chemically defined
- Heading: [28.52: Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams](https://border.bot/hs-codes/2852)
- Chapter: [28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes](https://border.bot/hs-codes/28)
- Edition: HS2022
- Duty in the United States: [See its 2 lines](https://border.bot/countries/united-states/hs-codes/285210)

## What this code covers

HS code 2852.10 covers chemically defined.

The legal text of the subheading is “Chemically defined”, in HS2022.

## What it doesn’t cover

Other goods of heading 28.52 are classified under 2852.90 (other).

- [2852.90](https://border.bot/hs-codes/285290) Other

## How it is structured

2852.10 is a six-digit subheading. Its first two digits, 28, are the chapter; the first four, 2852, are heading 28.52; the last two, 10, identify the subheading within the heading.

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

- Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
- Heading 28.52: Inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams
- Subheading 2852.10: Chemically defined

## In other countries

National tariff lines under 2852.10 are live on border.bot for the United States (2 lines, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/285210): 2 lines, used by 1 other country

- Previous subheading: [2850.00](https://border.bot/hs-codes/285000) Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 28.49
- Next subheading: [2852.90](https://border.bot/hs-codes/285290) Other

## Frequently asked questions

### What does HS code 2852.10 cover?

HS code 2852.10 covers chemically defined.

### Which heading and chapter is HS code 2852.10 in?

HS code 2852.10 is in heading 28.52 (inorganic or organic compounds of mercury, whether or not chemically defined, excluding amalgams) in chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes).

### Where are goods of heading 28.52 classified when 2852.10 doesn’t fit?

Other goods of heading 28.52 are classified under 2852.90 (other).

### Which countries’ tariffs list national lines under HS code 2852.10?

National tariff lines under 2852.10 are live on border.bot for the United States (2 lines, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 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://border.bot/hs-codes/285210.json