1,Sodium Tripolyphosphate(STPP)manufacturer 2,High purity,white powder,good quality 3,Best price quickly delivery 4,SGS test
Sodium Tripolyphosphate(STPP) CAS :7758-29-4 manufacturer
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1,What's Sodium Tripolyphosphate(STPP) ?
Sodium triphosphate (STP, sometimes 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 widespread use.
2, Application:
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 charged chelating 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 to retain moisture. Many governments regulate the quantities allowed in foods, as it can substantially increase the sale weight of seafood in particular. The United States 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
3,Specification:
NO. | Indexes | Industrial Grade | Food Grade |
1 | Assay Na5P3O10 % ≥ | 94.0 | 95.0 |
2 | P2O5 % ≥ | 57.0 | 57.0 |
3 | Water Insoluble Matter %≤ | 0.1 | 0.05 |
4 | Iron(Fe) %≤ | 0.01 | 0.01 |
5 | PH value(1%water solution) | 9.2-10.0 | 9.5-10.0 |
6 | Heavy Metal (as Pb) %≤ | 0.001 | |
7 | Arsenic (As) %≤ | 0.0003 | |
8 | Fluoride (F) %≤ | 0.003 | |
9 | Particle Size Power:Through 16 mesh sieve %≥Through 35 mesh sieve %≥Through 100 mesh sieve %≥ Fine power: Through 100 mesh sieve %≥
| 95 90 40
90 | 95 90 40
90 |
10 | Whiteness %≥ | 90.0 | 90.0 |
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STPP Sodium Tripolyphosphate anhydrous Na5P3O10
