# HTS 2845: Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined:

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Source: [2026 HTS Revision 21 (October 9, 2026)](https://hts.usitc.gov/search?query=2845). Additional duties by country of origin may apply; estimate a shipment's full duty with the tariff calculator: https://geopax.app/tariffs/calculator

## 2845: Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined:

| Code | Description | General | Special | Column 2 | Units |
| --- | --- | --- | --- | --- | --- |
| 2845 | Isotopes other than those of heading 2844; compounds, inorganic or organic, of such isotopes, whether or not chemically defined: |  |  |  |  |
| 2845.10.00.00 |   Heavy water (Deuterium oxide) | Free |  | 25% | kg |
| 2845.20.00.00 |   Boron enriched in boron-10 and its compounds | Free |  | 25% | kg |
| 2845.30.00.00 |   Lithium enriched in lithium-6 and its compounds | Free |  | 25% | kg |
| 2845.40.00.00 |   Helium-3 | Free |  | 25% | kg |
| 2845.90.01.00 |   Other | Free |  | 25% | kg |