Selenium Dioxide 99.9% Crystals from China
High-purity 99.9% selenium dioxide in crystalline form for semiconductor doping and specialty chemical synthesis. Falls squarely under HTS 2811.29.20.00 as an other inorganic oxygen compound of nonmetals, meeting Chapter 28 chemical definition notes. Sublimes at 315°C, used in vapor deposition processes.
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
• Provide end-use statement for tech apps; may qualify for duty-free under HTSUS if for R&D (check 9810)
• Anti-dumping checks rare but monitor; seal integrity critical to prevent oxidation/moisture issues
• Avoid classifying as 'wafers' (3818) if not cut; unworked crystal form stays in Chapter 28