Product Name
Disodium pytophosphate
Category
Metal & Ceramic Materials
Description
Disodium pyrophosphate or sodium acid pyrophosphate is an inorganic compound consisting of sodium cations and pyrophosphate anion. It is a white, water-soluble solid that serves as a buffering and chelating agent, with many applications in the food industry. When crystallised from water, it forms a hexahydrate, but it dehydrates above room temperature. Pyrophosphate is a polyvalent anion with a high affinity for polyvalent cations, e.g. Ca2+.Disodium pyrophosphate is produced by heating sodium dihydrogen phosphate:2 NaH2PO4 → Na2H2P2O7 + H₂O
Synonyms
DISODIUM PYROPHOSPHATE;disodium pytophosphate;DI-SODIUM DIHYDROGEN PYROPHOSPHATE;Diphosphoric acid disodium salt;DSPP;SODIUM ACID PYROPHOSPHATE;SODIUM DIHYDROGEN PYROPHOSPHATE;SAPP
IUPAC Name
disodium [hydroxy(oxido)phosphoryl] hydrogen phosphate
Molecular Formula
H2Na2O7P2
Canonical SMILES
OP(=O)([O-])OP(=O)(O)[O-].[Na+].[Na+]
InChI Key
GYQBBRRVRKFJRG-UHFFFAOYSA-L
Density
2.311 g/cm³ (25ºC)
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