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Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is an inorganic phosphate salt widely used as a dispersing agent, buffering agent, chelating agent, emulsifier, and water-softening component in detergents, food processing, ceramics, water treatment, and industrial chemical formulations.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) improves cleaning efficiency by binding hardness ions, stabilizing suspensions, and enhancing the performance of surfactants.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) functions as a pH regulator, sequestrant, and protein modifier in food applications, contributing to texture improvement and moisture retention.
CAS Number: 7722-88-5
EC Number: 231-767-1
Molecular Formula: Na₄P₂O₇
Molecular Weight: 265.90 g/mol
Synonyms: Sodium Pyrophosphate, Tetrasodium Pyrophosphate, TSPP, Sodium Diphosphate, Diphosphoric Acid Tetrasodium Salt, E450(i), Sodium Pyrophosphate Decahydrate (hydrated form), Disodium Diphosphate (informal), Sodium Pyrophosphate Technical Grade, Sodium Pyrophosphate, Tetrasodium Pyrophosphate, TSPP, Na₄P₂O₇, Disodium Dihydrogen Pyrophosphate (technical relation), Sodium Diphosphate, Tetrasodium Diphosphate, Sodium Acid Pyrophosphate (nomenclature family), Pyrophosphoric Acid Tetrasodium Salt, Sodium Phosphate Pyro, Pyro Sodium Phosphate, Sodium Pyro-Phosphate, Sodium Phosphate (Pyro Grade), Sodium Pyrophosphate Anhydrous, Sodium Pyrophosphate Decahydrate, Tetrasodium Pyrophosphate Anhydrous, Tetrasodium Pyrophosphate Hydrate, Food Grade Tetrasodium Pyrophosphate, Technical Grade TSPP, Industrial Grade TSPP, High-Purity Sodium Pyrophosphate, Pure Sodium Pyrophosphate, Extra-Pure Sodium Pyrophosphate, Sodium Pyrophosphate Crystals, Sodium Pyrophosphate Granules, Sodium Pyrophosphate Powder, TSPP Powder, Alkaline Sodium Pyrophosphate, Alkaline Builder Sodium Pyrophosphate, TSPP Chelating Agent, TSPP Sequestrant, TSPP Buffer, TSPP pH Modifier, TSPP Emulsifier, TSPP Dispersing Agent, TSPP Water Softener, TSPP Hardness Control Agent, TSPP Scale Control Agent, TSPP Corrosion Control Additive
APPLICATIONS
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used as a builder in detergents.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) enhances surfactant efficiency and soil dispersion.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) prevents redeposition of dirt on fabrics.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is applied in automatic dishwasher detergents.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) prevents scale and spotting on surfaces.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) improves cleaning in hard water.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in food processing.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) regulates pH and improves food texture.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) enhances water retention in processed meats.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) acts as a sequestrant in seafood processing.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) prevents discoloration and metal-induced oxidation.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) stabilizes canned seafood products.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in ceramics and metallurgy.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) disperses ceramic particles in slurries.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) enhances suspension stability and casting properties.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is employed in water treatment systems.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) binds calcium and magnesium ions.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) prevents scale formation and corrosion.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in textile processing.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) improves dye penetration and levelness.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) acts as a buffering agent during dyeing.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is incorporated into dental products.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) acts as a tartar control agent.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) supports plaque mineral modification.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used as a buffering agent in food processing.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) stabilizes pH in processed meats and seafood.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) improves texture and moisture retention in meat products.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used as a sequestrant.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) binds metal ions to prevent discoloration in foods.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) protects flavor in canned and processed foods.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in toothpaste formulations.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) prevents tartar buildup on teeth.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) enhances plaque removal when combined with abrasives.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in detergents.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) softens water in laundry formulations.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) improves cleaning efficiency in hard water.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in ceramic processing.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) disperses clay particles in ceramic slurries.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) improves the fluidity of ceramic casting slips.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in metal treatment.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) assists in metal cleaning and degreasing.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) prevents scale formation during metal processing.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in electroplating baths.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) enhances metal ion stability during plating.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) improves brightness of finished plated surfaces.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in water treatment.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) acts as a scale inhibitor in industrial systems.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) disperses mineral deposits in pipelines.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in baking powders.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) functions as a leavening acid.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) contributes to controlled gas release in baked goods.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in emulsified cheese production.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) stabilizes proteins in processed cheese.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) improves meltability and texture of cheese slices.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in pet food formulations.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) enhances palatability by modifying mineral balance.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) supports nutrient stability in canned pet foods.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in oilfield applications.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) disperses clays in drilling muds.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) prevents flocculation during fluid circulation.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is used in beverage stabilization.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) prevents turbidity in bottled drinks.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) binds trace metals that cause haze formation.
DESCRIPTION
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is a white, crystalline or granular salt.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is odorless and readily soluble in water.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) forms a moderately alkaline solution.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) contains the pyrophosphate anion, providing strong chelation capability.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) effectively binds multivalent cations.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) helps prevent precipitation and sediment formation.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) provides exceptional dispersing power.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) stabilizes suspensions in detergents and ceramics.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) enhances clarity and flowability of formulations.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) improves protein hydration in food applications.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) enhances texture, juiciness, and tenderness.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) supports emulsification in processed foods.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) is stable under dry storage.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) gradually hydrolyzes in aqueous solution.
Sodium Pyrophosphate (Tetrasodium Pyrophosphate) requires protection from moisture to prevent caking.
PROPERTIES
Chemical Formula: Na₄P₂O₇
Molecular Weight: 265.90 g/mol
Appearance: White crystalline or granular powder
Odor: Odorless
Density: ~2.53 g/cm³
Melting Point: 988–993°C (anhydrous, decomposes)
Solubility in Water: ~145 g/L at 25°C
pH (1% solution): ~10.0–10.5
Hygroscopicity: Moderate
Thermal Stability: Excellent under dry conditions
Hydrolysis: Converts slowly to orthophosphate in solution
Reactivity: Reacts with acids to form phosphoric acid derivatives
Solubility in Alcohol: Insoluble
Ionic Strength: High due to sodium content
Storage Temperature: Store below 30°C, dry and sealed
Corrosiveness: Mildly alkaline; may irritate skin and eyes
FIRST AID
Inhalation:
Move to fresh air and keep at rest.
Seek medical attention if irritation persists.
Skin Contact:
Wash skin with plenty of water.
Remove contaminated clothing.
Seek medical advice for persistent irritation.
Eye Contact:
Flush eyes with water for at least 15 minutes.
Lift eyelids during rinsing.
Seek medical attention if discomfort continues.
Ingestion:
Rinse mouth and drink water.
Seek medical help if large quantities are ingested.
Note to Physicians:
Alkaline salt; treat irritation and electrolyte imbalance if necessary.
HANDLING AND STORAGE
Handling:
Avoid creating dust during handling.
Wear goggles, gloves, and dust masks.
Ensure adequate ventilation.
Avoidance:
Avoid contact with acids.
Protect from moisture to prevent clumping.
Spill Procedures:
Sweep or vacuum without generating dust.
Dispose according to local regulations.
Storage:
Store in a cool, dry, ventilated area.
Keep containers tightly sealed.
Protect from humidity and incompatible materials.
