Leaded Anti-Knock Compound Sludge with Copper Impurities from Japan
Sludge generated from leaded anti-knock fuel additives production, rich in lead with copper from catalyst contamination. Falls under HTS 2620.21.00.10 for its copper content in leaded sludges, used industrially for lead and copper recovery per Chapter 26 notes.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Report metal content based on assay without deductions; include certificates of analysis in customs documentation
• Ensure sludge qualifies under heading 2620 by proving use in metal extraction, not incineration residues
• Check for arsenic content declarations to avoid reclassification; common pitfall is incomplete hazardous material manifests