Na4P2O7
M.W. 265.9
Appearance: White powder
Purity: 96.5-100.5%
Solubility: 6.23g in 100ml of water at 20℃, Clear colorless solution.
Insoluble in ethyl alcohol.

Sodium pyrophosphate tetrabasic, also called TSPP is used in the laboratory as a buffering agent. Has shown to be useful in the preparation of an EDTA-sodium pyrophosphate extraction buffer for microcystin analysis of soil samples. Sodium pyrophosphate dibasic also called, disodium pyrophosphate or DSPP has been used as a chelating agent in antimicrobial studies.