What is Tetrasodium Pyrophosphate CAS 7722-88-5?

Tetrasodium pyrophosphate, commonly called TSPP, is the tetrasodium salt of pyrophosphoric acid. It is a white powder or granular solid used as a sequestrant, dispersant, emulsifier and alkaline builder.

What is the typical pH of TSPP in solution?

A 1% solution is moderately alkaline, usually around pH 10.0-10.8. Formulators should allow for this alkalinity when adding acids or when using TSPP in pH-sensitive systems.

Why is TSPP used in processed meat?

It modifies meat proteins, helping increase water-holding capacity, improve texture and reduce cooking loss. It is used only where the appropriate food-grade material and local food regulations permit it.

What are the main applications?

TSPP is used in detergents and cleaners as a builder and dispersant, in food processing as an emulsifying salt and texturizer, in water treatment for sequestration and scale control, and in ceramics, textiles, electroplating and mineral processing.

What sequestration and dispersion benefits does it provide?

The pyrophosphate anion complexes calcium, magnesium and heavy-metal ions, helping soften water, suspend soil, control scale and stabilize dispersions in cleaning and industrial systems.

Which grades and packaging are available?

The listing covers industrial, detergent and food grades. It is supplied in 25 kg PE-lined woven bags or kraft paper bags and 1000 kg jumbo bags, with other packing available on request.

What specifications should be checked before ordering?

Confirm grade, assay, P2O5 content, pH, water-insoluble matter, orthophosphate, heavy metals, arsenic, fluoride and loss on ignition. Request the current batch analysis, technical data and safety information before purchase.

How should TSPP be stored and handled?

Store in tightly closed containers in a cool, dry, ventilated area away from acids, moisture and incompatible materials. Use dust-control measures, suitable gloves and eye protection, and follow the safety information for handling and disposal.

Tetrasodium Pyrophosphate (TSPP) CAS 7722-88-5

Tetrasodium Pyrophosphate (TSPP, sodium pyrophosphate), CAS 7722-88-5, is an inorganic phosphate salt supplied as a sequestrant, dispersant, water softener and alkaline builder for detergents, water treatment, ceramics, metal cleaning and food processing. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 7722-88-5
Synonyms: TSPP, Tetrasodium diphosphate, Sodium pyrophosphate anhydrous, Tetrasodium phosphate, Diphosphoric acid tetrasodium salt
Einecs: 231-767-1
Molecular Formula: Na₄P₂O₇
Grade: Industrial / Detergent / Food Grade
Package: 25 kg PE-lined woven bags or kraft paper bags; 1000 kg jumbo bags; other packing on request

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Product Description

Tetrasodium Pyrophosphate, CAS 7722-88-5, also known as tetrasodium diphosphate or sodium pyrophosphate anhydrous, is the tetrasodium salt of pyrophosphoric acid; the EC/EINECS number is 231-767-1.

Synonyms: TSPP; tetrasodium diphosphate; sodium pyrophosphate anhydrous; tetrasodium phosphate; diphosphoric acid tetrasodium salt.

CAS: 7722-88-5.

Molecular formula: Na₄P₂O₇.

Molecular weight: 265.9 g/mol.

EC number: 231-767-1.

It is a white crystalline or granular powder with strong sequestering ability for calcium and magnesium ions.

A 1% aqueous solution is alkaline with a pH of about 10.0–10.8.

It is hygroscopic, and its aqueous solution slowly hydrolyzes to orthophosphate.

It is used in detergents and cleaners as a builder, dispersant and water softener.

It is used in water treatment and boiler compounds for hardness and scale control.

It is used in metal cleaning, electroplating, ceramics, paper and clay processing.

Food grade (E450(c)) is used in processed meat, seafood, bakery and dairy products as a buffering agent, emulsifier and water-retention agent.

Confirm grade, assay, P₂O₅ content, pH, water-insoluble matter, orthophosphate, heavy metals, arsenic, fluoride and loss on ignition.

Store in tightly closed containers in a cool, dry, ventilated area away from acids, moisture and incompatible materials.

Confirm packaging with the requested quantity and destination requirements.

Document requirements should be confirmed from the current specification, SDS, COA or other product-specific files.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required grade, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Tetrasodium Pyrophosphate CAS 7722-88-5?

A: Tetrasodium pyrophosphate, commonly called TSPP, is the tetrasodium salt of pyrophosphoric acid. It is a white powder or granular solid used as a sequestrant, dispersant, emulsifier and alkaline builder.
Q:
What is the typical pH of TSPP in solution?

A: A 1% solution is moderately alkaline, usually around pH 10.0-10.8. Formulators should allow for this alkalinity when adding acids or when using TSPP in pH-sensitive systems.
Q:
Why is TSPP used in processed meat?

A: It modifies meat proteins, helping increase water-holding capacity, improve texture and reduce cooking loss. It is used only where the appropriate food-grade material and local food regulations permit it.
Q:
What are the main applications?

A: TSPP is used in detergents and cleaners as a builder and dispersant, in food processing as an emulsifying salt and texturizer, in water treatment for sequestration and scale control, and in ceramics, textiles, electroplating and mineral processing.
Q:
What sequestration and dispersion benefits does it provide?

A: The pyrophosphate anion complexes calcium, magnesium and heavy-metal ions, helping soften water, suspend soil, control scale and stabilize dispersions in cleaning and industrial systems.
Q:
Which grades and packaging are available?

A: The listing covers industrial, detergent and food grades. It is supplied in 25 kg PE-lined woven bags or kraft paper bags and 1000 kg jumbo bags, with other packing available on request.
Q:
What specifications should be checked before ordering?

A: Confirm grade, assay, P2O5 content, pH, water-insoluble matter, orthophosphate, heavy metals, arsenic, fluoride and loss on ignition. Request the current batch analysis, technical data and safety information before purchase.
Q:
How should TSPP be stored and handled?

A: Store in tightly closed containers in a cool, dry, ventilated area away from acids, moisture and incompatible materials. Use dust-control measures, suitable gloves and eye protection, and follow the safety information for handling and disposal.

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