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Molecule
Sodium Sulfite
CAS: 7757-83-7 · H2Na2O3S
2D Structure
3D Structure
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Basic Information
- CAS Registry Number
- 7757-83-7
- Molecular Formula
- H2Na2O3S
- Molecular Mass
- 128.06 g/mol
Identifiers
CAS Registry Number
7757-83-7
SMILES
O=S(O)O.[Na].[Na]
InChI Key
YKZJGZHPDUVUKN-UHFFFAOYSA-N
InChI
InChI=1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)
Names and Synonyms
- Sodium Sulfite Synonym
- Sulfurous acid, sodium salt (1:2) Synonym
- Sulfurous acid, disodium salt Synonym
- Anhydrous sodium sulfite Synonym
- Disodium sulfite Synonym
- Sodium sulfite (Na2SO3) Synonym
- Sodium sulfite anhydrous Synonym
- Sodium sulfite Synonym
- Disodium sulfite (Na2SO3) Synonym
- S-WAT Synonym
- E 221 Synonym
All Properties
Comprehensive physical and chemical properties
| Property | Value | Source |
|---|---|---|
| Molecular Mass | 128.06 g/mol | CAS Common Chemistry |
| 128.05999999999997 g/mol | RDKit | |
| 130.069 g/mol | chempirical lib | |
| Density | 2.63 g/cm³ | CAS Common Chemistry |
| 2.63 g/cm3 | CAS Common Chemistry | |
| Wikipedia Url | https://en.wikipedia.org/wiki/Sodium_sulfite | CAS Common Chemistry |
| Canonical SMILES | [Na].O=S(O)O | CAS Common Chemistry |
| InChI | InChI=1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3) | CAS Common Chemistry |
| InChI Key | InChIKey=YKZJGZHPDUVUKN-UHFFFAOYSA-N | CAS Common Chemistry |
| Name | Sodium sulfite | CAS Common Chemistry |
| Heavy Atom Count | 6 | RDKit |
| Hydrogen Bond Acceptors | 1 | RDKit |
| Hydrogen Bond Donors | 2 | RDKit |
| Rotatable Bonds | 0 | RDKit |
| Aromatic Ring Count | 0 | RDKit |
| Topological Polar Surface Area | 57.53 Ų | RDKit |
| LogP | -1.0805 | RDKit |
| Molar Refractivity | 24.908 cm³/mol | RDKit |
| Ring Count | 0 | RDKit |
| Formal Charge | 0 | RDKit |
| Fraction Csp3 | 0.0 | RDKit |
| Exact Mass | 127.95200348400002 g/mol | RDKit |
Spectral Data
NMR, IR, and Mass spectral data
Predicting NMR spectra...
10 ppm
9
8
7
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5
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3
2
1
0 ppm
| Shift (ppm) | Multiplicity | Integration | Assignment |
|---|
200 ppm
180
160
140
120
100
80
60
40
20
0 ppm
| Shift (ppm) | DEPT | Assignment |
|---|
Note: These NMR spectra are predicted computationally and may differ from experimental data. Predictions are based on chemical environment analysis.
External Resources
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MW = 128.06 g/mol; density = 2.630 g/mL. Edit any field — others recompute live.
