# HS code 2845.10: Heavy water (deuterium oxide)

> HS code 2845.10 covers heavy water (deuterium oxide). It sits in heading 28.45 (isotopes other than those of heading 28.44; compounds, inorganic or organic, of such isotopes, whether or not chemically defined) 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 28.45 are classified under 2845.20 (boron enriched in boron-10 and its compounds), 2845.30 (lithium enriched in lithium-6 and its compounds), 2845.40 (helium-3) or 2845.90 (other). National tariff lines under 2845.10 are live on border.bot for the United States (1 line, also used by 1 other country).

Source: https://border.bot/hs-codes/284510
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 28](https://border.bot/hs-codes/28) / [28.45](https://border.bot/hs-codes/2845) / [2845.10](https://border.bot/hs-codes/284510)

## Key facts

- HS code: 2845.10
- Covers: Heavy water (deuterium oxide)
- Heading: [28.45: Isotopes other than those of heading 28.44; compounds, inorganic or organic, of such isotopes, whether or not chemically defined](https://border.bot/hs-codes/2845)
- 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/284510)

## What this code covers

HS code 2845.10 covers heavy water (deuterium oxide).

The legal text of the subheading is “Heavy water (deuterium oxide)”, in HS2022.

## What it doesn’t cover

Other goods of heading 28.45 are classified under 2845.20 (boron enriched in boron-10 and its compounds), 2845.30 (lithium enriched in lithium-6 and its compounds), 2845.40 (helium-3) or 2845.90 (other).

- [2845.20](https://border.bot/hs-codes/284520) Boron enriched in boron-10 and its compounds
- [2845.30](https://border.bot/hs-codes/284530) Lithium enriched in lithium-6 and its compounds
- [2845.40](https://border.bot/hs-codes/284540) Helium-3
- [2845.90](https://border.bot/hs-codes/284590) Other

## How it is structured

2845.10 is a six-digit subheading. Its first two digits, 28, are the chapter; the first four, 2845, are heading 28.45; 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 28.45: Isotopes other than those of heading 28.44; compounds, inorganic or organic, of such isotopes, whether or not chemically defined
- Subheading 2845.10: Heavy water (deuterium oxide)

## In other countries

National tariff lines under 2845.10 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/284510): 1 line, used by 1 other country

- Previous subheading: [2844.50](https://border.bot/hs-codes/284450) Spent (irradiated) fuel elements (cartridges) of nuclear reactors
- Next subheading: [2845.20](https://border.bot/hs-codes/284520) Boron enriched in boron-10 and its compounds

## Frequently asked questions

### What does HS code 2845.10 cover?

HS code 2845.10 covers heavy water (deuterium oxide).

### Which heading and chapter is HS code 2845.10 in?

HS code 2845.10 is in heading 28.45 (isotopes other than those of heading 28.44; compounds, inorganic or organic, of such isotopes, whether or not chemically defined) 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 28.45 classified when 2845.10 doesn’t fit?

Other goods of heading 28.45 are classified under 2845.20 (boron enriched in boron-10 and its compounds), 2845.30 (lithium enriched in lithium-6 and its compounds), 2845.40 (helium-3) or 2845.90 (other).

### Which countries’ tariffs list national lines under HS code 2845.10?

National tariff lines under 2845.10 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/284510.json