Xenon-129 Isotopically Pure Gas from China
Xenon-129 (Xe-129) gas enriched to 99%+ isotopic purity by volume, falling under HTS 2804.29.0030 for isotopically pure rare gases. Primarily utilized in NMR spectroscopy and medical imaging research.
Duty Rate — China → United States
28.7%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 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(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Require supplier certificate of analysis confirming Xe-129 enrichment >99% to justify 2804.29.0030 classification
• Comply with EPA import notifications for high-purity gases used in research applications
• Package in certified high-pressure cylinders; declare as 'research gas' to avoid general chemical tariffs