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CAS No 7758-16-9 , disodium

  • Name: disodium
  • Synonyms: SAPP;Disodium diphosphate; Diphosphoric acid; disodium salt; Disodium dihydrogen pyrophosphate;[hydroxy(oxido)phosphoryl] hydrogen phosphate; Sodium diphosphate dibasic; Sodium acid pyrophosphate;disodium;
  • CAS Registry Number:
  • Melting Point: 988 DEG C
  • Density: 2.311 g/cm3 (25 C)
  • Safety Statements: 24/25
  • EINECS: 231-835-0
  • Molecular Weight: 221.938743
  • InchiKey: GYQBBRRVRKFJRG-UHFFFAOYSA-L
  • InChI: InChI=1S/2Na.H4O7P2/c;;1-8(2,3)7-9(4,5)6/h;;(H2,1,2,3)(H2,4,5,
    6)/q2*+1;/p-2
  • Molecular Formula: H2Na2O7P2
  • Molecular Structure:CAS No:7758-16-9 disodium

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References of disodium
Title: Sodium Acid Pyrophosphate
CAS Registry Number: 7758-16-9
Synonyms: Disodium dihydrogen pyrophosphate
Molecular Formula: H2Na2O7P2
Molecular Weight: 221.94
Percent Composition: H 0.91%, Na 20.72%, O 50.46%, P 27.91%
Line Formula: Na2H2P2O7
Literature References: Prepn: Bell, Inorg. Synth. 3, 98 (1950).
Properties: White, fused masses or powder. Dec at 220°. d (hexahydrate) 1.86. Sol in water, the soln having an acid reaction.
Density: d (hexahydrate) 1.86
Use: Chiefly in baking powders.