Specification :

Sodium Tripolyphosphate( STPP) Properties:
White powder , surface density: 0.35-0.9g/ cm3, melting point : 622, free soluble in water, aqueous solution appears acid,
It is a kind of inorganic surface active agent.

Indexes Industrial Grade Food Grade
Na5P3O10 94.0% Min 94.0% Min
P2 O 5 57.0% Min 57.0% Min
Water Insoluble Matter 0.15% Max 0.04% Max
Iron( Fe) 0.015% Max 0.006% Max
PH value ( 1% water solution) 9.2-10.0 9.5-10.0
Heavy Metal ( as Pb) 0.001% Max
Arsenic ( As) 0.0003% Max
Fluoride ( F) 0.003% Max
Whiteness 92% Min 92% Min
Ignition loss 1.0 /
density ( g/ cm3) 0.35-0.9 0.35-0.9
Phase I 10-30 10-30

Sodium Tripolyphosphate( STPP) Application:
As an oil contamination resistance agent in paper production.
In foodstuff industry it is used as quality improver in the process of
canned food, fruit juice drinks, foodstuff 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 aslo serves as softener or
densifier in foodstuff industry.