Zinc Sulfide Crystals from Mexico
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 — Mexico → United States
13%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 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