Sodium Tripolyphosphate (STPP)

White powder; Melting point 622°C; Easily soluble in water; It has salient chelating capacity to ions of Ca and Mg etc. and can soften hard water to make suspension solution become into clear solution; It has weak alkalinity but no corrosiveness. It is a surfactant, and has outstanding emulsification to lubricants and fat.

Sodium tripolyphosphate is used in the food industry as an emulsifying agent and quality improver agent, for example, including processed meat processed seafood, processed cheeses, noodles product.  It is used as quality improver in the process of canned food, fruit juice drinks, foodstuffs from milk or soybeans. It may tender the meat in canned ham and soften the skin of horse bean in canned horse bean. It may also serve as a softener or densifier in foodstuff industry.