| Identification | |
| Name: | Sulfurous acid, calciumsalt, hydrate (2:2:1) (9CI) |
| Synonyms: | Sulfurous acid,calcium salt (1:1), hemihydrate (8CI); Calcium sulfite (CaSO3), hemihydrate;Calcium sulfite hemihydrate; Calcium sulfite hydrate (2CaSO3.H2O) |
| CAS: | 29501-28-8 |
| Molecular Formula: | Ca. H2 O3 S . 1/2 H2 O |
| Molecular Weight: | 138.16 |
| Molecular Structure: |  |
| Properties | |
| Safety Data | |
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