# HS code 2804.29: Rare gases

> HS code 2804.29 covers rare gases, other than those classified in 2804.21. It sits in heading 28.04 (hydrogen, rare gases and other non-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 28.04 are classified under 2804.10 (hydrogen), 2804.21 (rare gases, argon), 2804.30 (nitrogen), 2804.40 (oxygen) or 6 others. National tariff lines under 2804.29 are live on border.bot for the United States (4 lines, also used by 1 other country).

Source: https://border.bot/hs-codes/280429
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 28](https://border.bot/hs-codes/28) / [28.04](https://border.bot/hs-codes/2804) / [2804.29](https://border.bot/hs-codes/280429)

## Key facts

- HS code: 2804.29
- Covers: Rare gases
- Heading: [28.04: Hydrogen, rare gases and other non-metals](https://border.bot/hs-codes/2804)
- 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 4 lines](https://border.bot/countries/united-states/hs-codes/280429)

## What this code covers

HS code 2804.29 covers rare gases, other than those classified in 2804.21.

The legal text of the subheading is “Rare gases: Other”, read under “Rare gases”, in HS2022.

## What it doesn’t cover

Other goods of heading 28.04 are classified under 2804.10 (hydrogen), 2804.21 (rare gases, argon), 2804.30 (nitrogen), 2804.40 (oxygen) or 6 others.

- [2804.10](https://border.bot/hs-codes/280410) Hydrogen
- [2804.21](https://border.bot/hs-codes/280421) Rare gases: Argon
- [2804.30](https://border.bot/hs-codes/280430) Nitrogen
- [2804.40](https://border.bot/hs-codes/280440) Oxygen
- [2804.50](https://border.bot/hs-codes/280450) Boron; tellurium
- [2804.61](https://border.bot/hs-codes/280461) Silicon: Containing by weight not less than 99.99 % of silicon
- [2804.69](https://border.bot/hs-codes/280469) Silicon: Other
- [2804.70](https://border.bot/hs-codes/280470) Phosphorus
- [2804.80](https://border.bot/hs-codes/280480) Arsenic
- [2804.90](https://border.bot/hs-codes/280490) Selenium

## How it is structured

2804.29 is a six-digit subheading. Its first two digits, 28, are the chapter; the first four, 2804, are heading 28.04; the last two, 29, 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 28.04: Hydrogen, rare gases and other non-metals
- Within the heading: Rare gases
- Subheading 2804.29: Other

## In other countries

National tariff lines under 2804.29 are live on border.bot for the United States (4 lines, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/280429): 4 lines, used by 1 other country

- Previous subheading: [2804.21](https://border.bot/hs-codes/280421) Rare gases: Argon
- Next subheading: [2804.30](https://border.bot/hs-codes/280430) Nitrogen

## Frequently asked questions

### What does HS code 2804.29 cover?

HS code 2804.29 covers rare gases, other than those classified in 2804.21.

### Which heading and chapter is HS code 2804.29 in?

HS code 2804.29 is in heading 28.04 (hydrogen, rare gases and other non-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 28.04 classified when 2804.29 doesn’t fit?

Other goods of heading 28.04 are classified under 2804.10 (hydrogen), 2804.21 (rare gases, argon), 2804.30 (nitrogen), 2804.40 (oxygen) or 6 others.

### Which countries’ tariffs list national lines under HS code 2804.29?

National tariff lines under 2804.29 are live on border.bot for the United States (4 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/280429.json