Zinc Electrolyte Purification Slag Silver from Mexico
Slag generated during zinc electrolyte purification in electrowinning plants, primarily zinc-based with silver precipitates and arsenic. Classified in 2620.19.60.40 for silver-content zinc residues used in metal recovery, per legal definitions excluding iron/steel and municipal waste. Basis for silver extraction processes.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include electrowinning process flowcharts and silver assay reports for customs; report gross metal content
• Certify non-municipal origin; common issue is moisture content affecting weight-based duties
• Use ISPM-15 compliant pallets for transport; declare arsenic levels for EPA compliance