Detergent Builder Sodium Tripolyphosphate Flakes from Mexico
Flaked STPP serves as a primary builder in powdered laundry detergents for chelating calcium and magnesium ions. Classified as sodium triphosphate polyphosphate in HTS 2835.31.00.00. Pure form without organic stabilizers.
Duty Rate — Mexico → United States
11.4%
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
• Comply with TSCA PMN if new formulation; note phosphorus regulations in target states
• Bulk packaging requires proper venting for moisture control