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SITCSection 5
U.S. imports of sodium triphosphate (sodium tripolyphosphate) (SITC 52364) totaled $8.0M in April 2026, traded with 13 countries.
Importers of Sodium Triphosphate (Sodium Tripolyphosphate) paid $542K in duties in April 2026 — an effective duty rate of 21% on $2.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Sodium Triphosphate (Sodium Tripolyphosphate) imports of $8.0M in April 2026 ran 31% above the year-to-date monthly average of $6.1M.
Last updated: April 2026 dataSodium tripolyphosphate (STPP) is a condensed phosphate salt widely used as a builder in detergent formulations, a moisture-retention agent in seafood and meat processing, and a dispersant in ceramics and paper manufacturing. Its food-contact applications mean that food-grade STPP imported for direct use in processed foods may be subject to FDA review, while detergent-grade material faces no such admissibility requirement. Importers should specify grade and intended use clearly in entry documentation, as food-grade and industrial-grade STPP may be priced and classified differently.
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Yes. Food-grade STPP used as a food additive or seafood processing aid falls under FDA jurisdiction and must comply with applicable food additive regulations. Industrial or detergent-grade STPP does not trigger the same admissibility review. Clearly stating the grade and end use on commercial invoices and entry documents helps avoid delays at the port.
The largest demand segments are household and industrial detergent manufacturing (where STPP acts as a water-softening builder), seafood and poultry processing (where it reduces moisture loss), and ceramics production (where it functions as a deflocculant). Detergent-sector demand has shifted in some markets due to phosphate restrictions in cleaning products, making food and industrial applications increasingly important for trade volumes.
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Monthly import values over time