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.
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 processed into inorganic luminophore pigments
Chapter 28 Note 2 excludes luminophores classified as coloring matter in Chapter 32; applies when doped or formulated for direct use in paints/lights.
If chemically doped for semiconductors or in mixtures
Doped chemical elements or complex preparations fall under 3824 per Chapter 28 Note 2(e); not pure zinc sulfide.
If precious metal sulfides admixed
Colloidal precious metal sulfides go to 2843; pure zinc sulfide stays in 2830 unless alloyed with gold/platinum sulfides.
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Import Tips & Compliance
ā¢ Verify chemical purity via certificate of analysis (COA) to confirm classification as chemically defined zinc sulfide per Chapter 28/29 notes
ā¢ Include Safety Data Sheet (SDS) showing non-radioactive, non-toxic handling; avoid misclassification as pigments (3206)
ā¢ Declare exact CAS number (1314-98-3) on entry to prevent scrutiny as organo-inorganic compounds excluded by Chapter 28 Note 2
Related Products under HTS 2830.90.15.00
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.