Boron-10 Enriched Boron Oxide Powder from China
B2O3 powder with boron enriched in the boron-10 isotope, used in specialized glass manufacturing and neutron shielding. Classified under HTS 2845.20.00.00 because it is a compound of isotopically enriched boron per Chapter 28 notes on isotopes. Purity levels are documented for nuclear and research applications.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Declare exact isotopic ratio and total activity; subject to EAR controls under ECCN 1C239 for nuclear materials
• Use IAEA safeguards documentation if sourced internationally to comply with non-proliferation rules