7758-29-4

  • CAS No.: 7758-29-4
  • Purity: 96.5%
  • Type: SODIUM TRIPOLYPHOSPHATE
  • Other Names: STPP
  • MF: Na5O10P3
  • Grade Standard: Food Grade
  • Appearance: white powder
  • Application: food additive

Daily Uses:

  • Used in dishwashing detergents to prevent lime scale and enhance cleaning efficiency.
  • Added to processed meats (e.g., ham, sausages) to retain moisture and improve texture.
  • Found in toothpaste as a stabilizer and tartar control agent.

Application Fields:

  • Detergentsfood processingtextile scouringwater treatment.

Synthesis Method:

  • High-temperature condensation: React sodium dihydrogen phosphate (NaH₂PO₄) and disodium hydrogen phosphate (Na₂HPO₄) at 400–500°C.
  • Chemical equation: \(5NaH_2PO_4 + Na_2HPO_4 \xrightarrow{\Delta} Na_5P_3O_{10} + 4H_2O\)

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