Product classification
HS code for Tritium: 2844.41
Radioactive elements, tritium and its compounds, alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compounds.
Classification of tritium under HS 2844.41
Tritium is classified under HS code 2844.41 because it is a radioactive isotope of hydrogen. According to the General Rules of Interpretation (GRI) and the Chapter 28 notes, radioactive elements and isotopes, along with their compounds, are prioritized within this chapter. Specifically, heading 2844 covers radioactive chemical elements and radioactive isotopes. Tritium (H-3) is a beta-emitting radioactive isotope, and its classification is determined by its physical property of radioactivity rather than its chemical identity as hydrogen. The subheading 2841.41 is specifically reserved for tritium and its compounds, including mixtures, dispersions, and cermets containing these substances. This classification remains consistent whether the tritium is in gaseous form, incorporated into a chemical compound like tritiated water (T2O), or part of a metal tritide used in industrial or research applications.
- Covers
- Tritium gas (pure or mixed)
- Tritiated water (heavy water containing tritium)
- Tritium-labeled organic compounds for research
- Tritium targets for neutron generators
- Luminous compounds containing tritium for watch dials or exit signs
- Also under 2844.41
- SRB Technologies (tritium lights)
- MB-Microtec (tritium watches)
- Los Alamos National Laboratory (research)
- Oak Ridge National Laboratory (research)
- ITER (fusion research)
Codes often confused with 2844.41
Common mistake. Tritium is frequently misclassified under HS code 2801.10 (Chlorine) or 2804.10 (Hydrogen) because it is an isotope of hydrogen. However, Note 1 to Chapter 28 and the specific wording of heading 2844 dictate that radioactive isotopes always take precedence over the non-radioactive forms of the element. It is also sometimes confused with HS code 2845.90, which covers non-radioactive isotopes like Deuterium. Because Tritium is unstable and undergoes radioactive decay, it must stay within 2844.
Top exporters and importers of HS 284441 (the code used for tritium), 2025
In 2025, the largest exporter of HS 284441 (the code used for tritium) in UN Comtrade data was the Netherlands, with 28% of world exports; the largest importer in UN Comtrade data was Spain, with 29% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 284441, not only tritium.
Top exporters 2025 · share of world exports
- 1 Netherlands $14M 28% of world exports
- 2 Italy $11M 23% of world exports
- 3 United States $8.8M 18% of world exports
World total: $49M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Spain $21M 29% of world imports
- 2 Netherlands $14M 20% of world imports
- 3 France $6.2M 8.6% of world imports
World total: $72M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for tritium
Brazil classifies tritium under NCM 2844.41.00: HS 2844.41 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about tritium
What is the HS code for Tritium?
The HS code for Tritium is 284441 (Radioactive elements; tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compounds). The HS code for Tritium and its various compounds or mixtures is 2844.41.
How do I classify Tritium for customs?
Tritium is classified under HS code 284441 — Radioactive elements; tritium and its compounds; alloys, dispersions (including cermets), ceramic products and mixtures containing tritium or its compounds. This is a 6-digit subheading level code.
Does the concentration of tritium affect the HS code?
No, any substance containing tritium where the radioactivity exceeds the exempt limits defined by national and international regulations is classified under 2844.41, regardless of the chemical carrier.
Which countries are the top exporters of tritium (HS 284441)?
In 2025, the top exporters of HS 284441 (the code used for tritium) in UN Comtrade data were the Netherlands ($14M, 28% of world exports), Italy ($11M) and the United States ($8.8M). World exports came to about $49M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of tritium (HS 284441)?
In 2025, the top importers of HS 284441 (the code used for tritium) in UN Comtrade data were Spain ($21M, 29% of world imports), the Netherlands ($14M) and France ($6.2M). World imports came to about $72M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Tritium the same in all countries?
The base HS code 284441 for Tritium is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for tritium in Brazil?
In Brazil, tritium (HS 284441) is classified under NCM 2844.41.00.