tetra-Sodium pyrophosphate is an inorganic sodium salt comprised of a diphosphate(4-) anion and four sodium(1+) cations.It is odorless, white powder or granules.
tetra-Sodium pyrophosphate anhydrous is an inorganic compound with the formula Na4P2O7. As a salt, it is a white, water-soluble solid. It is composed of pyrophosphate anion and sodium ions.