Sodium pyrophosphate decahydrate
CAS 13472-36-1
One P-O-P bridge turns ordinary phosphate chemistry into a useful tool for controlling calcium and other metal ions.
Sodium pyrophosphate decahydrate contains a P-O-P linkage joining two phosphate centers. That structural change gives pyrophosphate useful metal-ion binding, explaining its role as a sequestrant in detergents, processing, and tartar-control toothpaste. The decahydrate also contains ten crystal waters, so hydration strongly affects formula weight and handling. One bridging oxygen shifts phosphate chemistry toward metal-ion management.
Published:
2026-09-10
