Sodium triphosphate (STP, STPP or sodium tripolyphosphate or TPP) is an inorganic compound with the chemical formula Na5P3O10. It is an integral part of many household and industrial products, especially mass-produced detergents.
Sodium polyphosphate is mainly used in the processing of various meat products and poultry food, and used as a water softener in dyeing or post-treatment in industry.
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