Luminescent Grade Zinc Sulfide Powder (99.99% Purity) from Mexico
High-purity zinc sulfide powder, luminescent grade with 99.99% or more purity by weight, used primarily in the production of phosphors for displays and lighting. It falls under HTS 2830.90.1000 as a chemically defined sulfide of zinc meeting the specific purity and grade requirements for luminescent applications. This subheading distinguishes it from lower-purity or non-luminescent zinc sulfides.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Verify purity certification from supplier via lab analysis reports to confirm 99.99% threshold; declare as 'luminescent grade' to avoid reclassification
• Ensure SDS includes CAS 1314-98-3 and luminescent properties; watch for anti-dumping duties on Chinese origins