Other zinc sulfide
Sulfides; polysulfides, whether or not chemically defined: > Other: > Other zinc sulfide
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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)
Products classified under HTS 2830.90.15.00
Zinc Sulfide Powder (Luminescent Grade)
High-purity zinc sulfide powder used as a phosphor precursor in manufacturing glow-in-the-dark materials and fluorescent pigments. It falls under HTS 2830.90.1500 as 'other zinc sulfide,' a chemically defined inorganic sulfide compound not specified elsewhere in heading 2830. This non-sphinglerite form is prized for its optical properties in lighting and displays.
Synthetic Zinc Sulfide Crystals
Laboratory-grown zinc sulfide single crystals used in infrared optics and laser components. Classified under HTS 2830.90.1500 as other zinc sulfide, fitting the chemically defined inorganic compound definition excluding optical elements per Chapter 28 Note 2(h). Ideal for high-transmission windows in thermal imaging.
Zinc Sulfide Nanopowder
Ultrafine zinc sulfide particles (<100nm) for quantum dot synthesis and anti-reflective coatings. HTS 2830.90.1500 covers this as other zinc sulfide, a pure inorganic compound meeting chemical definition standards. Used in advanced displays and solar cells.
High-Purity Zinc Sulfide (99.99%) for Thin Films
Ultra-pure zinc sulfide granules for physical vapor deposition (PVD) in optical thin films. Falls under HTS 2830.90.1500 as other zinc sulfide, chemically defined and not excluded by chapter notes on worked forms. Essential for anti-reflective and protective coatings.
Zinc Sulfide Phosphor Precursor
Refined zinc sulfide used to produce ZnS:Cu/Au phosphors for electroluminescent panels. Classified in HTS 2830.90.1500 as other zinc sulfide before doping/activation. Meets inorganic compound criteria excluding finished luminophores.