Sodium metabisulfite

Na2O5S2CAS 7681-57-4190.09 g/mol

O−SOSO−OONa+Na+

Properties

Molecular formula
Na2O5S2
Molar mass
190.09 g/mol
Exact mass
189.8983 Da
Density
1.4 g/mL
Melting point
150 °C (decomposes)
logP
-1.75Crippen estimate
Polar surface area
91.7 Ų
H-bond donors / acceptors
2 / 3
Rotatable bonds
1

Identifiers

CAS number
7681-57-4
SMILES
[O-]S(=O)S([O-])(=O)=O.[Na+].[Na+]
InChIKey
ZBVPOSMABOMSMZ-UHFFFAOYSA-N
InChI
InChI=1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)

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Names and synonyms

20 names · show all
  • Sobisu
  • Disulfurous acid, sodium salt (1:2)
  • Pyrosulfurous acid, disodium salt
  • Disulfurous acid, disodium salt
  • Sodium pyrosulfite (Na2S2O5)
  • Sodium pyrosulfite
  • Sodium metabisulfite (Na2S2O5)
  • Disodium pyrosulfite
  • Fertisilo
  • Disodium disulfite
  • Sodium disulfite (Na2S2O5)
  • Disodium metabisulfite
  • Disodium pyrosulfite (Na2S2O5)
  • Campden tablets
  • Colorstrip catalyst 100
  • E 223
  • Sobis
  • Sodium sulfur oxide (Na2S2O5)
  • NSC 158277
  • NSC 227243

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Similar compounds

Tanimoto similarity of circular fingerprints over the whole catalogue. All similar compounds

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