Zinc Sulfide Crystals from Canada
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.
Duty Rate — Canada → United States
13%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• 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