Zinc Sulfide Crystals
Zinc sulfide (ZnS) in crystalline form is used in optical coatings, phosphors, and semiconductors. Classified under HTS 2830.90.90.00 as a polysulfide or other sulfide compound meeting chemical definition criteria.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If doped for electronic use in disc or wafer form
Chemically doped elements cut into wafers fall under 3818 or mixtures in 3824 per Chapter notes.
If in carbide form rather than pure sulfide
Carbides are specifically classified in heading 2849, separate from sulfides.
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Import Tips & Compliance
• Include lab test results proving it's pure ZnS, not doped for electronics (which may go to 3818)
• Comply with REACH-like regulations for zinc compounds; declare intended end-use
• Package in inert atmosphere to prevent oxidation during shipping
Related Products under HTS 2830.90.90.00
Cadmium Sulfide Powder
Cadmium sulfide (CdS) is a chemically defined inorganic sulfide compound used as a pigment in paints, ceramics, and phosphors for fluorescent lamps. It falls under HTS 2830.90.90.00 as an 'other' sulfide, distinct from specific sulfides like sodium sulfide listed elsewhere in heading 2830.
Antimony Trisulfide Powder
Antimony trisulfide (Sb2S3) is a red pigment and friction material used in matches and ammunition primers. It qualifies under HTS 2830.90.90.00 as an 'other' chemically defined sulfide.
Manganese Sulfide Granules
Manganese sulfide (MnS) granules used as a desulfurizer in steel production and in ceramics. Falls under HTS 2830.90.90.00 for other sulfides not specifically enumerated.
Copper(I) Sulfide Powder
Copper(I) sulfide (Cu2S) powder employed in mineral flotation and as a semiconductor material. Classified in HTS 2830.90.90.00 as other chemically defined sulfides.
Bismuth Sulfide Flakes
Bismuth sulfide (Bi2S3) flakes used in thermoelectric materials and pigments. It is an 'other' sulfide under HTS 2830.90.90.00, chemically defined per Chapter notes.
Lead Sulfide Crystals
Lead sulfide (PbS) crystals for infrared detectors. HTS 2830.90.90.00 other sulfides.