Sodium tripolyphosphate is an inorganic compound that is easily soluble in water, with an alkaline aqueous solution and a white crystalline powder. It is an amorphous water-soluble polyphosphate, pH regulator, and metal chelating agent. Sodium tripolyphosphate has functions such as chelation, suspension, dispersion, gelation, emulsification, and pH buffering, and can be used as a main auxiliary agent in the synthesis of detergents. Sodium tripolyphosphate plays an important role in washing:

1. Chelation of metal ions

Has a strong chelating effect on heavy metal ions

2. Has strong alkaline buffering effect

Keeping the pH value of the washing solution around 9.4 is beneficial for removing acidic dirt

3. Improve the effects of sol, emulsification, and dispersion

Sodium tripolyphosphate has the function of swelling and dissolving proteins, promoting the emulsification of fatty substances and suspended solid particles

4. Anti caking

Powdered synthetic detergents have hygroscopicity. If stored in a high humidity environment, clumping may occur, making it inconvenient to use fast detergents. Hexahydrate compounds formed by water absorbed by sodium tripolyphosphate have dry properties, which can prevent clumping caused by moisture absorption and keep synthetic detergents dry.