Detergent STPP (Sodium Tripolyphosphate) is a high-quality inorganic compound widely used as a key builder in detergent formulations. It effectively softens water, enhances cleaning efficiency, and prevents the redeposition of dirt during washing.

Sodium tripolyphosphate, chemical structure: this product is a kind of amorphous water-soluble linear polyphosphate, terminated with Na2PO4 at both ends, chemical formula Na5P3O10, relative molecular weight 367.86. It is often used in detergent, ceramic and water treatment industries as PH regulator and metal chelating agent.