STPP 94%
H.S.Code:2835 3100
Chemical formula: Na5P3O10
Molecular weight: 367.86
Quality : White powder, surface density 0.35-0.9g/cm3,melting point 622 . Dissolve in water easily, the aqueous solution is alkalinity. A kind of inorgantic chemical surface-active agent, with two kinds of forms:Na5P3O10-i and Na5P3O10(B). Two forms have the same chemical property.
Guaranteed Technical Specifications (GB9983-88) :
|
Indexes
|
Industrial Grade
|
Food Grade
|
|
Assay Na5P3O10 % ≥
|
94.0
|
94.0
|
|
P2O5 % ≥
|
57.0
|
57.0
|
|
Water Insoluble Matter %≤
|
0.15
|
0.05
|
|
Iron(Fe) %≤
|
0.01
|
0.01
|
|
PH value (1% water solution)
|
9.2-10.0
|
9.5-10.0
|
|
Heavy Metal (as Pb) %≤
|
|
0.001
|
|
Arsenic (As) %≤
|
|
0.0003
|
|
Fluoride (F) %≤
|
|
0.003
|
|
Particle Size
Through 16 mesh sieve %≥ Through 35 mesh sieve %≥ Trough 100 mesh sieve %≥ |
95
90 40 |
95
90 40 |
|
Whiteness %≥
|
90
|
90
|
Usages: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 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.