STPP(sodium tripolyphosphate) - 94%

Sodium tripolyphosphate /STPP 90%/94%/96%
Molecular Formula: Na5P3O10
CAS: 7758-29-4
Appearance: White powder
Specification: Sodium tripolyphosphate 90%
Specification
Content ≥ : 90%
Appearance: White crystal powder
Odor: Odorless
Melting point: 622degree
Solubility: 50g/100g in water(@25degree )

Specification: Sodium tripolyphosphate 94%
Item: Specification
Content ≥ : 94
P2O5 %≥ : 57
Whiteness %≥ : 88
Insoluble matter %≤ : 0.1
Fe %≤ : 70ppm
Size residue on 1.00 test sieve≤ : 5.0
Loss on lgnition(500) ≤ : 1.0
PH value(1% solution ): 9.2-10.0
Bulk density(g/cm3): 0.65-0.99
Phase: 10-30

Specification: Sodium tripolyphosphate 96%
Item: Specification
Content ≥ : 96
P2O5 %≥ : 57
Whiteness %≤ : 90
Water Insoluble matter %≤ : 0.1
Fe %≤ : 0.007
Heavy metal as Pb ≤ : 0.001
PH value(1% solution ): 9.2-10.0

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.
Package: In 25kg or 50kg or 1000kg net wpp/PE bags.

Application: Used as one of the main auxilaries for synthetic detergent, synergist for soap; Water softener, tanning agent for leather making, auxiliary for dyeing; As an oil contamination resistance agent in paper production. In foodstuff industry is used as quality improver in the process of canned food, fruit juice drinks, food stuffs from milk or soybeans. It may tender the meat in canned ham and soften skin of horse bean in canned horse bean. It may also serves as a softener or densifier in foodstuff industry