Tetrasodium Pyrophosphate (TSPP)

Key Specifications and Properties

• Molecular Formula: Na₄P₂O₇

• Molecular Weight: 265.90 g/mol

• Appearance: White crystalline powder or granules

• Purity: ≥94.0% (food grade); ≥98.0% (industrial grade)

• Solubility: Highly soluble in water (≥67 g/100 mL at 25°C); insoluble in alcohol

• Density: 2.53 g/cm³

• pH (1% aqueous solution): 10.0–11.0

• Loss on Drying: ≤2.0% (at 105°C)

• Heavy Metals: ≤10 ppm (as Pb)

• Storage: Cool, dry, well-ventilated area; seal to prevent moisture absorption and caking

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These specifications highlight tetrasodium pyrophosphate CAS No. 7722-88-5's robustness in alkaline environments and ease of handling in bulk formulations.

Applications Across Industries

Tetrasodium pyrophosphate CAS No. 7722-88-5 leverages its ion-sequestering abilities for superior performance in diverse uses:

• Food and Beverages: Functions as an emulsifier and stabilizer in canned meats, seafood, and dairy products to improve texture and prevent separation; acts as a sequestrant in soft drinks and cereals, approved as GRAS (E450(iii)).

  
  

• Household and Industrial Cleaning: Core builder in laundry detergents and dishwashing powders, softening water and boosting surfactant efficiency for effective stain removal.

  
  

• Personal Care: Incorporated into toothpastes as a tartar control agent and in shampoos to chelate minerals, enhancing foam stability and scalp health.

  
  

• Water Treatment: Serves as a corrosion inhibitor and dispersant in cooling towers and boilers, controlling scale formation and extending equipment life.

  
  

• Pharmaceuticals and Ceramics: Used as a buffering agent in oral care formulations; aids in clay dispersion for ceramic glazes and dental prosthetics.

  
  

Adopting TSPP enables streamlined processes with reduced additive requirements, fostering sustainable and cost-effective operations.

Benefits of Choosing Tetrasodium Pyrophosphate CAS No. 7722-88-5

• Superior Chelation: Effectively sequesters calcium and magnesium ions, increasing cleaning power by up to 25% in hard water conditions.

  
  

• pH Versatility: Alkaline nature stabilizes formulations in the 10–11 pH range, ideal for heavy-duty cleaners without harsh corrosives.

  
  

• Safety Assurance: Biodegradable with low oral toxicity (LD50 >7,000 mg/kg in rats); hypoallergenic and safe for direct food contact.

  
  

• Efficiency Gains: High solubility minimizes residue in rinses, supporting eco-friendly dosing and compliance with green chemistry standards.

  
  

Tetrasodium pyrophosphate CAS No. 7722-88-5 delivers reliable results, empowering brands to innovate in clean, high-performance products.

Frequently Asked Questions (FAQs)

What is tetrasodium pyrophosphate CAS No. 7722-88-5 used for in detergents?

Tetrasodium pyrophosphate CAS No. 7722-88-5 acts as a water softener and builder, binding hardness ions to enhance cleaning efficacy and prevent redeposition of soils on fabrics during laundering.

Is tetrasodium pyrophosphate CAS No. 7722-88-5 soluble in water for food applications?

Yes, its excellent solubility ensures uniform distribution in brines and sauces, making it perfect for emulsifying fats in processed foods like sausages and puddings without clumping.

What pH level does tetrasodium pyrophosphate CAS No. 7722-88-5 produce in solutions?

A 1% solution yields a pH of 10.0–11.0, providing strong alkalinity for effective metal chelation while remaining gentle on surfaces in cleaning and food processing.

Does tetrasodium pyrophosphate CAS No. 7722-88-5 meet food additive regulations?

Certainly; it adheres to FCC, USP, and EU E450(iii) standards, with typical usage at 0.1–0.5% to stabilize emulsions and maintain product quality safely.

How does tetrasodium pyrophosphate CAS No. 7722-88-5 compare to sodium tripolyphosphate?

Tetrasodium pyrophosphate (Na₄P₂O₇) offers milder alkalinity and faster dissolution for emulsification, whereas sodium tripolyphosphate (Na₅P₃O₁₀) provides deeper sequestration; TSPP is favored in oral care for its tartar-inhibiting action.

Can tetrasodium pyrophosphate CAS No. 7722-88-5 be used in toothpaste formulations?

Yes, it inhibits calculus formation by chelating calcium from saliva, typically at 1–5% concentrations, promoting oral hygiene without abrasiveness.

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