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Discription:
Molecular Formula: Na5P3O10
Molecular Weight: 367.86
CAS NO.: 7758-29-4
EINECS NO.: 237-004-9
H. S Code: 2835319000.
Standards: GB/T 9983-2004
White microdot powder with luster, density: 0.35-0.9g/cm 3 melting point at 622 ° C, easily soluble in water, with remarkable chelating ability to some metal ions such as Ca 2+, Mg 2+, can soften hard water, change suspension into solution, slightly alkaline, without causticity.
Application:
1. Sodium tripolyphosphate used as one of the main auxiliaries for synthetic detergent, synergist for soap;
2. Water softener, tanning agent for leather making, auxiliary for dyeing;
3. As an effective dispersion agent for suspension solutions of coatings, kaolin, magnesium oxide, calcium carbonate and drilling mud etc.
4. As an oil contamination resistance agent in paper production.
5. In food stuff industry it 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 the skin of horse bean in canned horse bean. It may also serves as a softener or densifier in food stuff industry.
Packing and storage:
25kg/pp bag or kraft bag, it also can be printed as the clients' requirements.
Store at a cool, dry and well ventilated place.
| Sodium Tripolyphosphate / STPP |
| 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 %≥ |
95.0
90.0
40.0 |
95.0
90.0
40.0 |
| Whiteness %≥ |
90.0 |
90.0 |
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