Sodium Tripolyphosphate (STPP) from Germany
Sodium tripolyphosphate is a polyphosphate salt used primarily as a builder in detergents and cleaning products to soften water and enhance cleaning efficiency. It falls under HTS 2835.39.5000 as it is a polyphosphate compound, chemically defined, not specifically enumerated elsewhere in the heading.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Verify purity and chemical composition via lab analysis to confirm classification as a polyphosphate under Chapter 28
• Include Safety Data Sheets (SDS) and ensure compliance with EPA regulations for detergent precursors
• Avoid misclassification as a simple phosphate (2835.25) by documenting polymeric structure