| CAS No | 7681-57-4 |
| Synonyms | Disulfurous acid, disodium salt ; Covastyle MBS ; Disodium disulfite ; Sodium Metabisulfite ; Sobisu ; Sodium disulfite (Na2S2O5) ; Sodium metabisulfite ; Sodium metabisulfite (Na2S2O5) ; Sodium pyrosulfite ; Sodium pyrosulfite (Na2S2O5) ; Sodium sulfur oxide (Na2S2O5) |
| Mol.F. | H2O5S2.2Na |
| Mol.Wt. | 192.12 |