Sodium bisulfite has been used externally for parasitic skin diseases and as a gastrointestinal antiseptic.
Irritant
⚠️ For information only; not a substitute for the official Safety Data Sheet (SDS).
Sodium bisulfite has been used externally for parasitic skin diseases and as a gastrointestinal antiseptic.
| Physical Description | Sodium bisulfite appears as white crystals or crystalline powder. Slight sulfurous odor. Specific gravity 1.48. Strong irritant to skin and tissue. |
| Color/Form | White crystal or crystalline powder |
| Odor | Slight sulfurous odor |
| Melting Point | Decomposes (NIOSH, 2024) |
| Boiling Point | Decomposes (NIOSH, 2024) |
| Density | 1.48 at 68 °F (USCG, 1999) - Denser than water; will sink |
| Solubility | 29 % (NIOSH, 2024) |
| Vapor Pressure | Vapor pressure, kPa at 20 °C: 2.4 |
| Refractive Index | INDEX OF REFRACTION: 1.526 |
| Stability/Shelf Life | ON EXPOSURE TO AIR IT LOSES SOME SULFUR DIOXIDE & IS GRADUALLY OXIDIZED TO SULFATE. |
| IUPAC Name | sodium hydrogen sulfite |
| Molecular Formula | HNaO3S |
| Molecular Weight | 104.06 g/mol |
| CAS | 7631-90-5 |
| SMILES | OS(=O)[O-].[Na+] |
| InChIKey | DWAQJAXMDSEUJJ-UHFFFAOYSA-M |
| Catalog No | KC.1910130 |
| Pack sizes | 500GM · 5KG |
⚠️ For information only; not a substitute for the official SDS.