| Identification | |
| Name: | Sulfurous acid |
| Synonyms: | Schweflige saure;Schweflige saure [German];Sulfur dioxide solution;UNII-J1P7893F4J; |
| CAS: | 7782-99-2 |
| EINECS: | 231-973-1 |
| Molecular Formula: | H2O3S |
| Molecular Weight: | 82.07908 |
| InChI: | InChI=1S/H2O3S/c1-4(2)3/h(H2,1,2,3) |
| Molecular Structure: | ![(H2O3S) Schweflige saure;Schweflige saure [German];Sulfur dioxide solution;UNII-J1P7893F4J;](https://img.guidechem.com/casimg/7782-99-2.gif) |
| Properties | |
| Transport: | UN 1833 8 |
| Stability: | Stable. Incompatible with strong bases. |
| Refractive index: | 1.788 |
| Water Solubility: | Soluble |
| Solubility: | Soluble |
| Appearance: | clear, colorless liquid |
| Packinggroup: | II |
| Sensitive: | Air Sensitive |
| Safety Data | |
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