Shandong, China
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Sodium Tripolyphosphate Tripolyphosphate, Stpp, Sodium Tripolyphosphate manufacturer / supplier in China, offering Na5p3o10, STPP 94%, Sodium Tripolyphosphate, High Quality with Competitive Price, Oil Drilling Grade Barite Powder /API Standard / Barium Sulphate Baso4, SHMP Sodium Hexametaphosphate, 68%, 65%, 60%, Factory Price, Water Softening Agent in Solution for Printing, Dyeing, and Boiler and so on.

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Na5p3o10, STPP 94%, Sodium Tripolyphosphate, High Quality with Competitive Price

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Min. Order / Reference FOB Price
5 Tons US $990/ Ton
Production Capacity: 60000tons/Month
Transport Package: Plastic Bag
Payment Terms: L/C, T/T, Western Union, Money Gram
Type: Sodium Tripolyphosphate
Grade Standard: Industrial Grade
CAS No: 7758-29-4
Mf: Na5p3o10
Appearance: White Powder or White Granular
Specification: SGS ISO

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Basic Info

Model NO.: 90%, 94%, 95%
Trademark: LY
Origin: Shandong
HS Code: 28353190

Product Description

Our advantage:
1. Factory price,
2. Good Quality,
3. Free sample,
4. ISO Cerficate,
5. A long stable supplier,
6. Good support to you

Sodium triphosphate

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 widespreaduse.

Preparation and properties

Sodium tripolyphosphate is produced by heating a stoichiometric mixture of disodium phosphate, Na2HPO4, and monosodium phosphate, NaH2PO4, under carefully controlled conditions.

2 Na2HPO4 + NaH2PO4 Na5P3O10 + 2 H2O

In this way, approximately 2 million tons are produced annually.

STPP is a colourless salt, which exists both in anhydrous form and as the hexahydrate. The anion can be described as the pentanionic chain [O3POP(O)2OPO3]5-. Many related di-, tri-, and polyphosphates are known including the cyclic triphosphate P3O93-. It binds strongly to metal cations as both a bidentate and tridentate chelating agent.


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.

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 United States Food and Drug Administration lists STPP as "generally recognized as safe. ".

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.
NO.IndexesIndustrial Grade          Food Grade
1Assay Na5P3O10 % ≥94.0                      95.0
2P2O5 % ≥57.0            57.0
3Water Insoluble Matter %≤0.1            0.05
4Iron(Fe) %≤0.007             0.01
5PH value(1%water solution)9.2-10.0            9.5-10.0
6Heavy Metal (as Pb) %≤              0.001
7Arsenic (As) %≤              0.0003
8Fluoride (F) %≤              0.003
9Whiteness %≥90.0             90.0

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