Stannous pyrophosphate is an inorganic compound with the chemical formula Sn2P2O7, it is mainly used for tin plating without cyanide plating, and it can also be used as a filler for toothpaste.

Density: 4.01g/cm³

Appearance: White crystalline powder

Solubility: insoluble in water, soluble in concentrated acid, soluble in pyrophosphate