Detergent Builder Sodium Tripolyphosphate Flakes from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Comply with TSCA PMN if new formulation; note phosphorus regulations in target states
• Bulk packaging requires proper venting for moisture control