Name
|
Index
|
Test results
|
|
Na5P3O10
|
≥94%
|
96.3%
|
|
P2O5
|
≥57%
|
57.5%
|
|
Fe
|
≤0.015%
|
0.003%
|
|
Water insolubles
|
≤0.1%
|
0.048%
|
|
PH value(10g/L solution)
|
9.2-10
|
9.69
|
|
As(As Pb)
|
≤0.001%
|
0.001%
|
|
Fluoride(As F)
|
≤0.003%
|
0.0006%
|
Sodium tripolyphosphate(STPP), also known as pentasodium triphosphate, pentasodium tripolyphosphate or sodium triphosphate, is used in a wide range of applications in the manufacture of cleaning products and food preservatives as well as in water treatment facilities. STPP is a sodium salt of triphosphoric acid that has the appearance of white crystal powder. It is odorless and is water soluble. In a highly controlled environment, it is made by combining monosodium phosphate and disodium phosphate.
Sodium tripolyphosphate(Na5P3O10) is a strong cleaning ingredient that typically can rid dishes and fabrics of soil and spots. Its key function is that it allows surfactants to work at their full potential. Also, it prevents deposition of soil and acts as a pH buffer. It softens detergent water and can be used as a water treatment, as well. Many household cleaning products, including surface and toilet cleaners, contain STPP due to its cleaning component. Most chemical plants that make STPP list "detergents" as the primary area of use for this chemical.