Sodium Tripolyphosphate STPP Cas 7758-29-4

Sodium Tripolyphosphate Purity 94% Appearance white microdot powder or granular Application as main detergent building

STPP/Sodium Tripoly Phosphate 94 detergent grade

1.feature:

CAS NO :7758-29-4

Byname:sodium tripolyphosphate

Appearance :white powder

Molecular Formula :Na5P3O10

Molecular Weight :367.86 

2.Specification : 

 Tech. grade

Item	Industrial Grade
Na5P3O10	94.0% Min
P2O5	57.0% Min
Water Insoluble Matter	0.10% Max
Iron (Fe)	0.015% Max
PH Value (1% water solution)	9.2-10.0
Whiteness	92% Min
Ignition Loss	1.0
Density (g/cm3)	0.35-0.9
Phase I	10-30

Food grade

Item	Food Grade
Na5P3O10	94.0% Min
P2O5	57.0% Min
Water Insoluble Matter	0.05% Max
Iron (Fe)	0.006% Max
PH Value (1% water solution)	9.5-10.0
Heavy Metal (As Pb)	0.001% Max
Arsenic (As)	0.0003% Max
Fluoride (F)	0.003% Max
Whiteness	92% Min
Ignition Loss	/
Density (g/cm3)	0.35-0.9
Phase I	10-30

 3.Uses :Used as one of the main auxiliaries for synthetic detergent, synergist for soap; 

Water softener, tanning agent for leather making , auxiliary for dyeing;

As an effective dispersion agent for suspensions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud, etc;As an oil contamination resistance agent in paper production2.In foodstuff industry, 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 serves as a softener or densifier in foodstuff industry

4.Packing : 25kg/pp bag,21m/20fcl

5.Properties:White powder; Melting point 622 °C ; Easily soluble in water; It has got salient chelating capacity to metal ions of Ca and Mg etc. and can soften hard water to make suspension into solution, alkalinity, without causticity . It is a surfactant, and has got outstanding emulsification to lubricants and fat. It has different bulk density, i.e. low density 0.35-0.5g/cm 3 , medium density 0.51-0.65g/cm3 and high density 0.66-0.9g/cm 3 . This product has two crystalline forms, namely phase I (high temperature phase) and phase II (low temperature phase). The chemical properties of the two phases are the same, and the difference between them lies in the thermostability, hygroscopicity, solubility and hydration heat when dissolving .

Used in detergent, synergist for soap; water softener; tanning agent for leather making, auxiliary for dyeing; As an effective dispersion agent for suspension solutions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.; 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, 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 serves as a softener or densifier in foodstuff industry. 

Sodium Tripolyphosphate STPP Cas 7758-29-4