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Sodium Tripolyphosphate (STPP)

STPP Food Grade
Sodium Tripolyphosphate Water Treatment
Fengbai Sodium Tripolyphosphate STPP
Sodium Tripolyphosphate for Sale
Sodium Tripolyphosphate Supplier

  • Product Name: Sodium Tripolyphosphate
  • Appearance: White Powder
  • Na5P3O10, %: ≥94
  • Unsolvable matter %: ≤0.15
  • Tech Grade: Industrial / Food Grade
  • CAS No: 7758-29-4
  • MF: Na5P3O10
  • HS Code: 28352910

Sodium tripolyphosphate (STPP) is a white crystalline or crystalline powder which soluble in water. It has complexing ability to alkali metal and heavy metal salt and it can soften hard water. STPP chemical also has the property of ion exchange. For this reason, it can make suspension into the solution. It is a kind of inorganic surfactant with certain properties of organic surfactant. Commonly used as a detergent, but also used in water treatment, tanning leather, dyes, paint, petroleum, paper, organic synthesis, medicine, rubber, food, and other industries. You may contact us to get a price list.


Industrial grade

Food grade

Main contents (Na5P3O10 )%≥



Phosphorus pentoxide(P2O5)   %≥



Water insoluble  %≤



Fe    %≤



PH value of 1% solution



Heavy metals, as Pb %≤



Arsenic,as As  %≤



Fluoride, as F %≤



Whiteness %≥




Plastic-woven sack with polythene inner bag, net weight 25kg, 50kg or 1000kg.


Keep away from water or moisture, do not pile up the open air.

What is Sodium Tripolyphosphate Used for

Fengbai STPP chemical 94% is commonly used in food and industry. STPP food grade mainly used as a water retention agent for food to keep food taste fresh and tender. In the industry, it widely used as a synthetic detergent, ceramic adhesive, soft agent, dyeing AIDS, drilling mud dispersant.

Sodium tripolyphosphate detergent has three main functions:

1. Chelation of heavy metal ions: The heavy metal ion in water, combine with the detergent molecule in the catharsis process become insoluble metal salt, make catharsis ability reduces, lose effect completely even. STPP detergent can eliminate the negative effects of heavy metal ions. It has a strong chelation effect on heavy metal ions, which can be blocked to eliminate the adverse effects on washing. In addition, it can also capture the dirt contained in a variety of metal components, in the washing process to play a role in the dirt dissociation.

2. Descaling, emulsifying and dispersing of dirt: Sodium tripolyphosphate can expand and solubilize the protein in the dirt, and has the effect of degumming. It can promote the emulsification of fat and disperse solid dirt.

3. Effect of preventing agglomeration to the detergent: STPP chemical can keep detergent dry and granular, and prevent water absorption and caking. In addition, it has an alkaline buffering effect and is beneficial to the removal of acid dirt.

Sodium tripolyphosphate technical grade is mainly used as an auxiliary agent for synthetic detergents, used in soap synergists and to prevent the precipitation and blooming of bar soap oil. It has a strong emulsification effect on lubricating oil and fat and can be used to adjust the pH of the buffer soap. It can also be used as a softener for industrial water, tanning agents, dyeing aids. In the paint, kaolin, magnesia, calcium carbonate and other industries, when used in suspension, it is used as a dispersing agent. Also used as a dispersant in drilling mud or as an anti-oil agent in the paper industry.

In the cooling water circulation system: Sodium tripolyphosphate is often used as a scale inhibitor in cooling water treatment. Because it can effectively destroy the normal growth process of crystals such as calcium carbonate, thus preventing the formation of calcium carbonate scale.
Water softener. STPP chemical chelates metal ions with metal ions in solution to form a soluble chelate, which reduces hardness. Therefore, it is widely used in water purification and softening.

In ceramics: It has excellent properties of chelating hard metal ions and has a good effect on degluing in ceramic production. The use of sodium tripolyphosphate can reduce the viscosity of ceramic mud, improve the flow of mud, reduce the water content of mud, thus increasing the yield and increasing the strength of the embryo.

Sodium tripolyphosphate food grade is often used as a water retention agent, quality improver, pH regulator and metal chelator in the food industry. Mainly used in canned goods, dairy products, juice drinks, soy milk, and other quality improvers; Water preservation tenderizer for meat products such as ham, lunch meat; A peel softener.

1. Peel softener. Many fruits and vegetables have tough skins, which get tougher as they ripen. In the process of fruit and vegetable processing, adding STPP food grade can reduce the tenacity of the peel. Therefore, the cooking time would be shortened and the pectin extraction rate would be improved.
Preservatives. sodium tripolyphosphate food additive can inhibit the growth of microorganisms, thus antiseptic bacteriostatic effect. It can prevent meat, poultry, fish corruption, to extend the food storage life.

2. Antistaling agent. Sodium tripolyphosphate uses in food can keep the PH range of the food stable, which can make the food taste more delicious. It also controls the acidity of food and how quickly it goes sour.

3. Water retention agent. STPP food grade has an enhanced effect on protein and colloglobulin, so it can increase the hydration and water retention of meat products, improve the water permeability, promote the softening of food and improve the quality of food, and maintain the excellent flavor of food.

4. Anti-coagulant. It prevents the agglutination of milk during heating and prevents the separation of milk protein from fat.

Fengbai - A Professional STPP Chemical Manufacturer

With more than 15 years of experience, fengbai has become a well-known water treatment chemical manufacturer in China. Fengbai has its own production base and the most advanced production technology. We can customize the size of the STPP powder according to your requirements. Our products have passed all kinds of quality testing certification, including ISO9001, SGS, HACCP, KOSHER, HALAL and so on. Our products have been exported to many countries and regions, and many customers have reached long-term friendly cooperation with fengbai. Welcome to contact us to get a free quote if you are interested in our products.

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