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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| šØš³China | 2.8% | +35.0% | 37.8% |
| š²š½Mexico | 2.8% | +10.0% | 12.8% |
| šØš¦Canada | 2.8% | +10.0% | 12.8% |
| š©šŖGermany | 2.8% | +10.0% | 12.8% |
| šÆšµJapan | 2.8% | +10.0% | 12.8% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If fabricated into optical elements like lenses
Chapter 28 Note 2(h) excludes optical elements of metal halides/sulfides; shifts to Chapter 90 when shaped for imaging.
If natural zinc blende ore
Natural mineral forms fall under Chapter 26 as unrefined ores, not chemically defined compounds.
If doped semiconductor wafers
Chapter 28 note specifies doped elements in disc/wafer form go to 3818, not pure crystals.
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Import Tips & Compliance
ā¢ Provide X-ray diffraction (XRD) reports confirming cubic/sphalerite structure to distinguish from natural mineral (2608)
ā¢ Ensure declaration specifies 'chemically defined' to avoid reclassification under mineral Chapter 26
ā¢ For crystal forms, confirm not cut/polished optical elements (9001) via manufacturing process documentation
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.
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.