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2835.39.50.00/Sodium Tripolyphosphate (STPP)/Mexico

Sodium Tripolyphosphate (STPP) from Mexico

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 — Mexico → United States

13.7%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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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

Sodium Tripolyphosphate (STPP) from Mexico — Import Duty Rate | HTS 2835.39.50.00