# HS code 2843.10: Colloidal precious metals

> HS code 2843.10 covers colloidal precious metals. It sits in heading 28.43 (colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals) 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 28.43 are classified under 2843.21 (silver compounds, silver nitrate), 2843.29 (silver compounds, other), 2843.30 (gold compounds) or 2843.90 (other compounds; amalgams). National tariff lines under 2843.10 are live on border.bot for the United States (1 line, also used by 1 other country).

Source: https://border.bot/hs-codes/284310
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 28](https://border.bot/hs-codes/28) / [28.43](https://border.bot/hs-codes/2843) / [2843.10](https://border.bot/hs-codes/284310)

## Key facts

- HS code: 2843.10
- Covers: Colloidal precious metals
- Heading: [28.43: Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals](https://border.bot/hs-codes/2843)
- 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 1 line](https://border.bot/countries/united-states/hs-codes/284310)

## What this code covers

HS code 2843.10 covers colloidal precious metals.

The legal text of the subheading is “Colloidal precious metals”, in HS2022.

## What it doesn’t cover

Other goods of heading 28.43 are classified under 2843.21 (silver compounds, silver nitrate), 2843.29 (silver compounds, other), 2843.30 (gold compounds) or 2843.90 (other compounds; amalgams).

- [2843.21](https://border.bot/hs-codes/284321) Silver compounds: Silver nitrate
- [2843.29](https://border.bot/hs-codes/284329) Silver compounds: Other
- [2843.30](https://border.bot/hs-codes/284330) Gold compounds
- [2843.90](https://border.bot/hs-codes/284390) Other compounds; amalgams

## How it is structured

2843.10 is a six-digit subheading. Its first two digits, 28, are the chapter; the first four, 2843, are heading 28.43; 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 28.43: Colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals
- Subheading 2843.10: Colloidal precious metals

## In other countries

National tariff lines under 2843.10 are live on border.bot for the United States (1 line, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/284310): 1 line, used by 1 other country

- Previous subheading: [2842.90](https://border.bot/hs-codes/284290) Other
- Next subheading: [2843.21](https://border.bot/hs-codes/284321) Silver compounds: Silver nitrate

## Frequently asked questions

### What does HS code 2843.10 cover?

HS code 2843.10 covers colloidal precious metals.

### Which heading and chapter is HS code 2843.10 in?

HS code 2843.10 is in heading 28.43 (colloidal precious metals; inorganic or organic compounds of precious metals, whether or not chemically defined; amalgams of precious metals) 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 28.43 classified when 2843.10 doesn’t fit?

Other goods of heading 28.43 are classified under 2843.21 (silver compounds, silver nitrate), 2843.29 (silver compounds, other), 2843.30 (gold compounds) or 2843.90 (other compounds; amalgams).

### Which countries’ tariffs list national lines under HS code 2843.10?

National tariff lines under 2843.10 are live on border.bot for the United States (1 line, 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/284310.json