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Tetrasodium pyrophosphate

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Tetrasodium pyrophosphate

Molecular formula: Na4O7P2 CAS# 7722-88-5
Categories: Inorganic salt
PubChem CID: 24403 | CHEBI:71240 | NSC 56751 | CHEMBL450079
Names
English:
Caswell No. 847
Diphosphoric acid, tetrasodium salt
E 450c
E450c
EINECS:231-767-1
Pyrophosphoric acid tetrasodium salt
TSPP
Tetrasodium diphosphate(IUPAC)
Tetrasodium pyrophosphate [Wiki]
sodium pyrophosphate
tetrasodium phosphate
tetrasodium;phosphonato phosphate(IUPAC)

Variants of the formula:

Na4P2O7
Na^+/0O`^-/P`|O|<_(A75)O^-`/0Na^+>\O/P`|O|<_(A75)O^-`/0Na^+>\O^-\0Na^+
Na^+\0O`^-/P<_pp4O><_q4O^-_(A-60,N0)Na^+>/O\P</O^-`\0Na^+><_pp4O>\O^-/0Na^+
Elemental composition
Can't show the diagram.
Symbol Element Atomic weight Number of atoms Mass percent

Reactions in which Tetrasodium pyrophosphate is involved

  • H4P2O7 + 4{M}OH -> {M}4P2O7 + 4H2O , where M = Na K Li Rb
  • Na4P2O7 + 2CH3COOH "0-10^oC"--> Na2H2P2O7 + 2CH3COONa
  • Na2H2P2O7 + 2NaOH -> Na4P2O7 + 2H2O
  • NaPO3 + Na4P2O7 -> Na5P3O10
  • 3MgO + Na4P2O7 "900^oC"--> Mg3(PO4)2 + 2Na2O