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Geprüfter Lieferant Sodium triphosphate (STP, STPP or sodium tripolyphosphate or TPP, ) 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. It is produced on a large scale as a component of many domestic and industrial products, especially
Detergents. Environmental problems associated with eutrophication are attributed to its widespreaduse.
| 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 |
1.In detergents
The majority of STPP is consumed as a component of commercial detergents.It serves as a "builder," industrial jargon for a water softener. In hard water (water that contains high concentrations of Mg2+ and Ca2+), detergents are deactivated. Being a highly chargedchelating agent, TPP5- binds to dications tightly and prevents them from interfering with the sulfonate detergent.
2.Food Applications
STPP is a preservative for seafood, meats, poultry, and animal feeds.It is common in food production as E number E451. In foods, STPP is used as an emulsifier and to retain moisture. Many governments regulate the quantities allowed in foods, as it can substantially increase the sale weight of seafood in particular. The UnitedStates Food and Drug Administration lists STPP as "generally recognized as safe.".
3.Other Uses
Other uses (hundreds of thousands of tons/year) include "ceramics, leather tanning(as masking agent and synthetic tanning agent - SYNTAN), anticaking, setting retarders, flame retardants, paper, anticorrosion pigments, textiles, rubber manufacture, fermentation, antifreeze.
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A: You can contact us and then we arrange samples for you.
Q2.Which kind of payment terms can you accept?
A:We accept L/C,T/T and other payment terms.
Q3: How to confirm the Product Quality before placing the order?
A: You can get free samples for the product that you needonly pay the shipping cost or arrange a courier to us and takethe samples. You can send us your product specifications andrequests,we will arrange other things well.
Q4:What's your MOQ ?
A:Our MOQ is 1000kg .
Q5: Is there any possible to use my appointed label orpackage?
A: Yes.If needed,we'd like to use your label or packageaccording to your requirement.
Q6: How can you guarantee the goods you offer is qualified?
A: We alwavs believe honesty and responsibility are basis ofone company,so whatever products we provide for you allare qualified.We will have goods tested and provide COA before arrange delivery for you.
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