Arsenic Disulfide Crystals from China
High-purity arsenic disulfide (As2S2) crystals grown for research in photoconductive materials and phase-change memory devices. Classified in HTS 2813.90.10.00 as 'other' sulfides of arsenic, chemically defined per Chapter 28/29 notes. Supplied in ampoules under inert gas.
Duty Rate — China → United States
25%
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
• Register with DEA if research involves scheduled precursors, though As2S2 itself unregulated
• Use customs valuation based on research-grade purity premiums; document via lab specs
• Avoid bulk packaging pitfalls—crystals require vacuum-sealed containers per IATA dangerous goods