Tetrasodium pyrophosphate

CAS Registry Number®

7722-88-5
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CAS Name

Tetrasodium pyrophosphate

Molecular Formula

H4O7P2.4Na

Cite this Page

Tetrasodium pyrophosphate.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/ChemicalDetail.aspx?ref=7722-88-5 (retrieved 2022-08-14) (CAS RN: 7722-88-5).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Melting Point (1)

    988 °C
  • Density (1)

    2.534 g/cm3

Source(s)

  • (1) Hazardous Substances Data Bank data were obtained from the National Library of Medicine (US)

Other Names and Identifiers

InChI

InChI=1S/4Na.H4O7P2/c;;;;1-8(2,3)7-9(4,5)6/h;;;;(H2,1,2,3)(H2,4,5,6)

InChIKey

InChIKey=WTXQIGCNRZDSJU-UHFFFAOYSA-N

SMILES

O(P(=O)(O)O)P(=O)(O)O.[Na]

Canonical SMILES

[Na].O=P(O)(O)OP(=O)(O)O

Other Names for this Substance

  • Diphosphoric acid, sodium salt (1:4)
  • Pyrophosphoric acid, tetrasodium salt
  • Diphosphoric acid, tetrasodium salt
  • Anhydrous tetrasodium pyrophosphate
  • Phosphotex

Deleted or Replaced CAS Registry Numbers

93269-17-1, 156460-73-0, 192507-07-6, 1269628-79-6