Sodium Tripolyphosphate (STPP)
Cas No. : 7758-29-4
MF : Na5O10P3
MW : 367.86
Melting point : 622 °C
Density : 2.52 g/cm3 (20℃)
Sodium tripolyphosphate, also known as pentasodium phosphate, sodium pyrometaphosphate, STPP, pentasodium tripolyphosphate. Its appearance is white powder crystal with good fluidity. The relative molecular mass is 367, and the melting point is 622 °C. It is easily soluble in water, and its aqueous solution is alkaline.
Product Application:
As a food water retaining agent, sodium tripolyphosphate stpp food grade can improve the stability of the product, maintain the internal water retention of the food, and improve the shape, flavor and color of the food. It is mainly used in meat products and aquatic products, and can also be used in noodle products. It mainly forms a network structure with water to lock the water, improve the structure and taste of the product, and can chelate the metal ions Ca2+, Mg2+, Cu2+, Fe2+ in the solution to form a soluble chelate, thereby reducing the hardness, so it is widely used Used for water purification and softening. It can also extend the shelf life.