| Product Name | Sulfurous acid |
| CAS No. | 7782-99-2 |
| Synonyms | schwefligesaure; sulfurdioxidesolution; sulfurous; SULPHUROUS ACID; SULFUROUS ANHYDRIDE; Sulfur dioxcide solution; sulfonic acid |
| InChI | InChI=1/H2O3S/c1-4(2)3/h(H2,1,2,3) |
| Molecular Formula | H2O3S |
| Molecular Weight | 82.0791 |
| Density | 2.483g/cm3 |
| Refractive index | 1.788 |
| Hazard Symbols |  C:; |
| Risk Codes | 20-34:; |
| Safety | 26-36/37/39-45:; |
7782-99-2 sulfurous acid
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