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CAS No 2466-09-3 , phosphono dihydrogen phosphate

  • Name: phosphono dihydrogen phosphate
  • Synonyms: acide diphosphorique; CHEBI:29888; Diphosphoric acid; Pyrophosphorsaeure; PPV;phosphono dihydrogen phosphate; Diphosphorsaeure; 2466-09-3; EINECS 219-574-0;Pyrophosphoric acid;
  • CAS Registry Number:
  • Transport: UN 3260
  • Melting Point: 61 ºC
  • Flash Point: °C
  • Boiling Point: °Cat760mmHg
  • Density: 2.43 g/cm3
  • Water Solubility: soluble in water,alcohol,ether
  • Safety Statements: R34
  • Hazard Symbols: C: Corrosive;
  • Flash Point: °C
  • EINECS: 219-574-0
  • Molecular Weight: 177.975084
  • InchiKey: XPPKVPWEQAFLFU-UHFFFAOYSA-N
  • InChI: InChI=1S/H4O7P2/c1-8(2,3)7-9(4,5)6/h(H2,1,2,3)(H2,4,5,6)
  • Risk Statements: S26;S36/37/39;S45
  • Molecular Formula: H4O7P2
  • Molecular Structure:CAS No:2466-09-3 phosphono dihydrogen phosphate

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2466-09-3 Pyrophosphoric acid

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References of phosphono dihydrogen phosphate
Title: Pyrophosphoric Acid
CAS Registry Number: 2466-09-3
CAS Name: Diphosphoric acid
Molecular Formula: H4O7P2
Molecular Weight: 177.98
Percent Composition: H 2.27%, O 62.93%, P 34.81%
Literature References: Prepd according to the equation 5H3PO4 + POCl3 ? 3H4P2O7 + 3HCl: Geuther, J. Prakt. Chem. [2] 8, 359 (1874); Partington, Wallsom, Chem. News 136, 97 (1928); by heating H3PO4: Bell, Ind. Eng. Chem. 40, 1464 (1948).
Properties: Hygroscopic glass, seldom acicular crystals, mp 61°. K1 at 18° = 0.14; K2 = 0.011; K3 = 2.1 ′ 10-7; K4 = 4.1 ′ 10-10. Forms normal salts, such as Na4P2O7, and dihydrogen salts, such as Na2H2P2O7. Solubility in water (23°): 709 g/100 ml. Quickly converted to phosphoric acid when dissolved in hot water. Sol in alcohol and ether.
Melting point: mp 61°