natriumtripolyfosfaatti

Natriumtripolyfosfaatti, often abbreviated as STPP, is an inorganic compound with the chemical formula Na5P3O10. It is a salt of the tripolyphosphate dianion. STPP appears as a white powder or crystalline solid. It is soluble in water and has a slightly alkaline solution. It is a hygroscopic substance, meaning it readily absorbs moisture from the air.

STPP is widely used in various industrial and consumer applications. One of its primary uses is as a builder in detergents, where it enhances cleaning performance by softening water and dispersing dirt particles. It is also utilized in food processing as a preservative, emulsifier, and texturizer. In food, it can help retain moisture in meats and seafood, and improve the texture of processed cheeses. Other applications include water treatment, where it acts as a sequestering agent to prevent scale formation, and in ceramics as a deflocculant to improve the flow properties of clay slurries. It is also found in some toothpastes to prevent tartar buildup. The production of STPP typically involves the reaction of phosphoric acid with sodium carbonate or sodium hydroxide.