sodium pyrophosphate

Sodium Pyrophosphate

Product Analysis

Sodium pyrophosphate, also called tetrasodium pyrophosphate, or TSPP, is used in the laboratory as a buffering agent. Sodium pyrophosphate acts as a separating, clarifying, buffering and softening agent for water.

Sodium pyrophosphate also acts as an emulsifier, pH buffer and dough conditioner. Finally, sodium pyrophosphate can be used as a thickening agent in puddings and as a control agent in toothpaste.

Sodium pyrophosphate is a mineral compound with the formula Na4P2O7. As a salt, it is a white, water-soluble solid composed of pyrophosphate anions and sodium ions.


Production Process

Sodium pyrophosphate is produced by the reaction of phosphoric acid with sodium carbonate to form disodium phosphate, then heated to 450 ° C to form sodium pyrophosphate (tetra sodium pyrophosphate) :

2Na2HPO4 → Na4P2O7 + H2O


Appearance Specifications

Appearance :

Physical state :

Soluble in water , insoluble in alcohol and ammonia

Keep at room temperature

Melting point :
79.5 ° C

Boiling point:
93.8 ° C

1.82 g / cm3


What are the uses of sodium pyrophosphate (TSPP) ?

Sodium pyrophosphate, or tetra sodium pyrophosphate, is used as a buffering agent, an emulsifier, a dispersing agent, and a thickening agent, and is often used as a food additive. Common foods containing sodium pyrophosphate include chicken nuggets, puddings, crab meats, canned tuna and soy-based meat substitutes, and pet foods such as cats, which are used as flavor enhancers.

In toothpaste and floss, sodium pyrophosphate acts as a control agent and removes calcium and magnesium from saliva, thus preventing them from settling on the teeth. Sodium pyrophosphate is used in toothbrush solutions before brushing to help reduce plaque.

Sodium pyrophosphate is sometimes used in household detergents to prevent the deposition of substances on clothes, but due to its phosphate content, it causes water atrophy and algae growth.

With the chelating properties of metal ions, increasing the water holding capacity of protein, pH buffering, stabilization, emulsification, thickening, etc., sodium pyrophosphate (tetra sodium pyrophosphate) is widely used in food to improve the strength and quality of products. It is also used with other phosphates (such as sodium hexametaphosphate and sodium pyrophosphate) in seafood to increase water retention.


  • Application in food industry

Sodium pyrophosphate (TSPP) is mainly used in food for the following two functions:

1) A buffer agent: With a pH of 9.8 to 10.8 (1% solution), sodium pyrophosphate can be used as an alkaline agent to regulate the pH of processed foods such as puddings and so on.

2) Calcium absorbent: sodium pyrophosphate can remove natural calcium ions from proteins. On the other hand, it cross-links with proteins, which accelerates protein gelling and improves tissue (and mouthfeel).

The following food list may contain sodium pyrophosphate:

  • Soybean or wheat-based foods, similar in appearance and taste to meat
  • Marshmallow
  • Pudding
  • Cheese
  • Ice cream
  • Milk protein products
  • Tuna fish

Sodium pyrophosphate is used in meat products to increase shelf life and color, as an emulsifier in dairy and in the food industry to cause swelling and maintain puffiness.


  • Application in toothpaste

One of the main goals of sodium pyrophosphate (TSPP) is to prevent plaque formation by reducing the deposition of calcium and magnesium on teeth. Therefore, it is commonly used as an anti-inflammatory component in many toothpaste and mouthwash. Sodium pyrophosphate has the same function.

The leading manufacturer of toothpaste, Crest, uses sodium pyrophosphate as an anti-tartar in its teeth whitening products.


Is it safe to eat sodium pyrophosphate?

Yes, sodium pyrophosphate has almost no side effects and its safety has been approved by the US Food and Drug Administration (FDA) and the European Food Safety Authority (EFSA) as well as The Joint FAO/WHO Expert Committee on Food Additives (JECFA).



Sodium pyrophosphate (TSPP) is generally known as safe (GRAS) when used as a separator in food.



Sodium pyrophosphate (tetra sodium pyrophosphate) is a food additive authorized in the European Union (EU) and can be used as a carrier in the preparation of colored anthocyanins.



Gostaresh Tejarat Sadr Pazh Company, with more than ten years of experience in supplying raw materials for the food industry, has taken steps to sell sodium pyrophosphate with excellent quality and very reasonable prices.

To buy sodium pyrophosphate or know the price of sodium pyrophosphate, contact the experts of the collection through our contact us page.