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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pre-coated onto plastic frames
Assembled optical components with sulfide coatings classified by function in Chapter 90.
If in pickling preparations
Chapter 28 Note 2 excludes certain industrial preparations; metal treatment pastes go to 3810.
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Import Tips & Compliance
• Submit ICP-MS analysis confirming >99.99% purity to support 'chemically defined' status
• Declare evaporation source form (granules/powder) to prevent confusion with fabricated parts
• Comply with REACH-like US chemical import notifications for optical chemicals
Related Products 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.
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.