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:
- Detergents, food processing, textile scouring, water treatment.
Synthesis Method:
- High-temperature condensation: React sodium dihydrogen phosphate (NaH₂PO₄) and disodium hydrogen phosphate (Na₂HPO₄) at 400–500°C.
- Chemical equation: \(5NaH_2PO_4 + Na_2HPO_4 \xrightarrow{\Delta} Na_5P_3O_{10} + 4H_2O\)