Tetrasodium Pyrophosphate (TSPP) CAS 7722-88-5

Sodium pyrophosphate (tetrasodium pyrophosphate, TSPP) is an inorganic phosphate salt widely used as a detergent builder, dispersant, water softener and pH buffer in detergents, water treatment, ceramics, metal surface cleaning and food processing. It offers strong sequestering ability for Ca²⁺/Mg²⁺ ions, excellent dispersion performance and stable alkalinity in aqueous systems.

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• CAS: 7722-88-5
• Einecs (EC No.): 231-767-1
• Molecular Formula: Na₄P₂O₇
• Typical Grade: Industrial / Detergent / Food Grade
• Typical Package: 25 kg PE-lined woven bags or kraft paper bags; 1000 kg jumbo bags; other packing on request

Physicochemical Properties

Applications

• Detergent and cleaning formulations
  • Builder and water softener in household and industrial detergents
  • Improves detergency by sequestering Ca²⁺/Mg²⁺, preventing redeposition of soil on fabrics and surfaces
• Water treatment & boiler compounds
  • Softening of process water; helps to control hardness and scale formation
  • Used in some boiler treatment formulations as dispersant and conditioning agent
• Metal surface cleaning & electroplating
  • Degreasing and de-rusting agent in metal cleaning formulations
  • Complexes metal ions in electroplating baths, improving bath stability and surface finish
• Ceramics, paper and clay processing
  • Dispersant for clay, kaolin, titanium dioxide and other pigments in ceramic and paper slurries
  • Improves fluidity and reduces viscosity, enabling higher solids content and better coating performance
• Food industry (Food Grade, E450(c))
  • Buffering agent, emulsifier and water-retention agent in processed meat, seafood, bakery and dairy products
  • Functions as calcium sequestrant, improves texture and reduces cooking loss in meat and plant-based products
• Other uses
  • Component in toothpaste and dental products as tartar control agent
  • Additive in some textile, leather and oilfield formulations where dispersion and complexing are needed

For detailed application matching to your formulation, please email info@industrochem.com with your process and target specifications.

Storage Conditions

• Store in a cool, dry and well-ventilated warehouse, away from moisture and direct sunlight.
• Keep bags tightly sealed after opening to avoid moisture uptake and caking (product is hygroscopic).
• Avoid contact with acids and strong oxidizing agents; TSPP is alkaline and may react with acids exothermically.
• Recommended shelf life: 24 months in original unopened packaging under proper storage conditions (actual shelf life depends on storage environment).

Safety Precautions

(General handling information; always follow your local SDS and regulations.)

• Hazard profile
  • Alkaline, irritating to eyes, skin and respiratory tract in dust form.
• Personal protection
  • Avoid breathing dust; use local exhaust or dust collection in handling and packaging areas.
  • Wear suitable PPE: dust mask or respirator, safety goggles, protective gloves and work clothing.
• Handling advice
  • Handle gently to minimize dust generation.
  • Do not eat, drink or smoke while handling chemicals; wash hands thoroughly after work.
• First-aid (basic)
  • Eye contact: Rinse cautiously with plenty of clean water for several minutes; remove contact lenses if easy to do; seek medical advice if irritation persists.
  • Skin contact: Wash off with water and mild soap; change contaminated clothing.
  • Inhalation: Move the person to fresh air; seek medical attention if breathing difficulty or persistent irritation occurs.
  • Ingestion: Rinse mouth with water; do not induce vomiting; get medical advice if a large amount is swallowed.

For a full SDS and regulatory support (REACH, GHS labels, etc.), please contact info@industrochem.com.