a sodium salt of triphosphoric acid used as a builder in soaps and detergents

Used in detergents as builder to soften the water. Prevents dirt particles from adhering back to the garment.

A white powder used for water softening and as a food additive and texturizer.

(Na5P3O10) A crystalline salt used chiefly as a water softener, sequestering agent, and deflocculating agent, especially in soaps and detergents.

Sodium tripolyphosphate (STPP, sometimes STP or sodium triphosphate), with formula Na5P3O10, is a polyphosphate of sodium. It is the sodium salt of triphosphoric acid.