Other
Isotopes other than those of heading 28.44; compounds, inorganic or organic, of such isotopes, whether or not chemically defined. > Helium-3 > Other > Other
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2845.90
Argon-38 Enriched Gas
>- Argon-38 is a stable isotope of argon, enriched for use in geological age dating and as a tracer in scientific studies. As a separate chemical element that is not radioactive, it falls under heading 28.45, which covers isotopes other than those of heading 28.44. The product is presented in gaseous form, typically in sealed cylinders for laboratory use.
2845.90.00Carbon-14 Labeled Urea
>- Carbon-14 labeled urea is an organic compound of the radioactive carbon isotope carbon-14, used in biochemical tracer studies and radiometric dating. Although it is an organic compound, heading 28.45 covers compounds, inorganic or organic, of isotopes other than those of heading 28.44. However, because carbon-14 is a radioactive isotope, it is excluded from heading 28.45 by Note 1(A) to Section VI and must be classified in heading 28.44.
2845.90.00Deuterium Oxide (Heavy Water, D2O)
>- Deuterium oxide, commonly known as heavy water, is a compound of the stable hydrogen isotope deuterium. It is used as a moderator in nuclear reactors and in various scientific and industrial applications. As a compound of an isotope other than those of heading 28.44, it is classified under heading 28.45.
2845.90.00Helium-3 Gas
>- Helium-3 is a rare, stable isotope of helium used in cryogenics, neutron detection, and quantum computing. It is a separate chemical element that is not radioactive, and therefore falls under heading 28.45, which covers isotopes other than those of heading 28.44. The product is supplied as a compressed gas in cylinders.
2845.90.00Krypton-86 Gas Standard
>- Krypton-86 is a stable isotope of krypton used as a wavelength standard in laser metrology and spectroscopy. As a non-radioactive isotope, it is classified under heading 28.45. The product is typically supplied in sealed glass or metal containers for laboratory use.
2845.90.00Lead-208 Enriched Target
>- Lead-208 enriched targets are metal foils or discs made of the stable isotope lead-208, used in nuclear physics experiments and isotope production. As an element in a form other than radioactive, it falls under heading 28.45. The product is supplied as a solid metal piece, typically with a high isotopic enrichment.
2845.90.00Magnesium-25 Carbonate
>- Magnesium-25 carbonate is a compound of the stable isotope magnesium-25, used in nutrition studies and isotope dilution analysis. As an inorganic compound of a non-radioactive isotope, it is classified under heading 28.45. The product is typically supplied as a powder or crystalline solid.
2845.90.00Neon-22 Isotope
>- Neon-22 is a stable isotope of neon used in mass spectrometry standards and in the manufacture of neon signs. As a non-radioactive isotope, it is classified under heading 28.45. The product is supplied as a gas in cylinders or ampoules.
2845.90.00Nickel-64 Metal Powder
>- Nickel-64 metal powder is a stable isotope of nickel used in nuclear target fabrication and catalyst research. As a non-radioactive isotope in elemental form, it falls under heading 28.45. The product is supplied as a fine powder with high isotopic purity.
2845.90.00Oxygen-18 Water (H2^18O)
>- Oxygen-18 water is water enriched with the stable isotope oxygen-18, used in PET imaging and metabolic research. As a compound of a non-radioactive isotope, it is classified under heading 28.45. The product is supplied as a liquid with a specified isotopic enrichment.
2845.90.00Silicon-29 Wafer Blank
>- Silicon-29 wafer blanks are single crystal silicon wafers enriched with the stable isotope silicon-29, used in quantum computing research. As an isotope of a non-radioactive element, it falls under heading 28.45. However, Note 8 to Chapter 28 states that doped chemical elements in disc, wafer, or similar forms are classified in heading 38.18.
2845.90.00Sulfur-34 Elemental
>- Sulfur-34 is a stable isotope of sulfur used in NMR spectroscopy and metabolic studies. As a non-radioactive isotope in elemental form, it is classified under heading 28.45. The product is supplied as a solid, typically in powdered or crystalline form.
2845.90.00Tritium Gas (HT)
>- Tritium gas (HT) is the radioactive isotope of hydrogen, used in nuclear research and fusion experiments. Because tritium is radioactive, it is excluded from heading 28.45 by Note 1(A) to Section VI and must be classified in heading 28.44. The product is supplied as a gas in sealed containers.
2845.90.00Xenon-129 Gas Hyperpolarized Precursor
>- Xenon-129 gas is a stable isotope of xenon used as a precursor for hyperpolarized MRI lung imaging. As a non-radioactive isotope, it is classified under heading 28.45. The product is supplied as a gas in cylinders, often with high isotopic purity.