2845.40.00.00
Helium-3
Classification path
- Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined
- Helium-3
Rates of duty
- General (MFN)
- Free
- Column 2Cuba, North Korea, Russia, Belarus
- 25%
- Unit of quantity
- kg
Related lines in heading 2845
About heading 2845
Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined
Heading 2845 covers isotopes other than those covered by heading 2844, and inorganic or organic compounds of those isotopes, whether or not chemically defined. It has specific lines for heavy water, boron enriched in boron-10, lithium enriched in lithium-6, and helium-3, plus an other line. All listed lines carry a general (MFN) rate of Free.
Full guide to heading 2845Products in this heading
- Heavy water (deuterium oxide)
- Boron enriched in boron-10
- Compounds of boron enriched in boron-10
- Lithium enriched in lithium-6
- Compounds of lithium enriched in lithium-6
- Helium-3
- Stable isotopes not named in the specific lines
- Compounds of stable isotopes not named in the specific lines
Frequently asked questions
What is the HTS code for heavy water?
Heavy water (deuterium oxide) is classified under 2845.10.00.00, with a general (MFN) rate of Free.
What is the duty on boron enriched in boron-10?
Boron enriched in boron-10 is classified under 2845.20.00.00, with a general (MFN) rate of Free. Compounds of that enriched boron stay in the same subheading.
How do I classify a stable isotope product that is not heavy water, boron-10, lithium-6, or helium-3?
Use 2845.90.01.00, with a general (MFN) rate of Free, for a stable isotope or a compound of a stable isotope that is not named in the earlier subheadings.
Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.