Chemical Plant Scrubber Sludge from Mexico
Wet scrubber solids from HCl absorption towers containing ammonium chloride crystals. Other wastes from chemical industries per note 6(d), HTS 3825.90.0100 covers process residuals not elsewhere specified.
Duty Rate — Mexico → United States
10%
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
• Chloride content analysis (>30%) confirms process origin
• Dewatering to <25% moisture prevents free liquid during transport
• Dust suppression wetting agent compatibility testing required