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Sodium Tripolyphosphate
stpp 94% tech grade
1.Attribute.
Product: Sodium Tripolyphosphate (STPP)
Molecular Formular: Na5P3O10
CAS No.: 13573-18-7
Appearance: White powder or granular; Easily soluble in water;
2,Specification:
ITEM | INDEX | |
Tech. Grade | Food Grade | |
Na5P3O10 (%): | 94Min | 95Min |
P2O5 (%): | 57Max | 57Max |
Insolubles in water (%): | 0.15Max | 0.05Max |
Fe (%): | 0.007Max | N |
Ph (1% solution): | 9.2-10 | 9.5-10 |
Heavy Metal (As Pb) (%): | N | 0.001Max |
Arsenic (As) (%): | N | 0.0003Max |
Fluoride(F) (%): | N | 0.003Max |
Whiteness(%): | 90Min | 90Min |
Density | 0.35-0.9 | 0.35-0.9 |
I type content (%) | 10-30 | 10-30 |
3,Property
White powder or granular;Easily soluble in water;It has got salient chelating capacity to Ca and Mg ions.and soften hard water to make suspension solution become into clear solution;it has got weak alkalinity but no corrosiveness.It is a surfactant,and has got outstanding emulsification to lubricants and fat.
4,Uses:
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
