Sodium metabisulphite
Relevant Data
Food Additives Approved in the United States
Food Additives Approved by WHO:
General Information
| Chemical name | Sodium metabisulphite |
| E No. | E 223 |
| INS. | 223 |
| CAS number | 7681-57-4 |
| Group | No |
| Component of the group |
Sulphur dioxide - sulphites (E 220 - 228) |
From webgate.ec.europa.eu
Computed Descriptors
Download SDF| 2D Structure | |
| CID | 656671 |
| IUPAC Name | |
| InChI | InChI=1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2 |
| InChI Key | HRZFUMHJMZEROT-UHFFFAOYSA-L |
| Canonical SMILES | [O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+] |
| Molecular Formula | Na2S2O5 |
| Wikipedia | sodium metabisulfite |
From Pubchem
Computed Properties
| Property Name | Property Value |
|---|---|
| Molecular Weight | 190.095 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 6 |
| Rotatable Bond Count | 0 |
| Complexity | 136.0 |
| CACTVS Substructure Key Fingerprint | A A A D c Q A A O D B g A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A D A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A = = |
| Topological Polar Surface Area | 125.0 |
| Monoisotopic Mass | 189.898 |
| Exact Mass | 189.898 |
| Compound Is Canonicalized | True |
| Formal Charge | 0 |
| Heavy Atom Count | 9 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Isotope Atom Count | 0 |
| Covalently-Bonded Unit Count | 3 |
From Pubchem
Taxonomic Classification
| Kingdom | Inorganic compounds |
|---|---|
| Superclass | Mixed metal/non-metal compounds |
| Class | Alkali metal oxoanionic compounds |
| Subclass | Alkali metal dithionites |
| Intermediate Tree Nodes | Not available |
| Direct Parent | Alkali metal dithionites |
| Alternative Parents | |
| Molecular Framework | Not available |
| Substituents | Alkali metal dithionite - Inorganic sodium salt - Inorganic oxide - Inorganic salt |
| Description | This compound belongs to the class of inorganic compounds known as alkali metal dithionites. These are inorganic compounds in which the largest oxoanion is dithionite, and in which the heaviest atom not in an oxoanion is an alkali metal. |
From ClassyFire