| Customization: | Available |
|---|---|
| CAS No.: | 7758-79-4 |
| Formula: | Na5p3o10 |
|
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STPP is an inorganic compound with formula Na5P3O10. It is the sodium salt of the polyphosphate penta-anion, which is the conjugate base of triphosphoric acid.
STPP is an important auxiliary agent in synthetic detergents. Most of sodium tripolyphosphate is used in synthetic detergents, and a few are used for softening of food and industrial water.
|
ITEM |
STANDARD |
|
assay (%) (na5p3o10) |
95 min |
|
appearance |
white granular |
|
p2o5 (%) |
57.0 min |
|
fluoride (ppm) |
10max |
|
lead (ppm) |
4 max |
|
heavy mental (as pb) (ppm) |
10 max |
|
chlorides (as cl) (%) |
0.025 max |
|
sulphates (so42-) (%) |
0.4 max |
|
substances not dissolved in water (%) |
0.05 max |
|
ph value (%) |
9.5 - 10.0 |
|
loss on drying |
0.7% max |
|
hexahydrate |
23.5% max |
|
water-insoluble substances |
0.1% max |
|
higher polyphosphates |
1% max |
1.25 KG/bag, 25MT/20'FCL
2.also be packed according to customer's needs.
Store closed containers in a cool, dry, well-ventilated area. Avoid exposure to direct sunlight.
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