Loading…
Loading…
CAS Number: 7681-57-4
Sodium Metabisulphite is a water-soluble inorganic sodium sulphite compound with the molecular formula Na₂S₂O₅. It is commonly supplied as a white to pale-yellow crystalline powder with a mild sulphurous odour and is used primarily as a reducing agent, antioxidant, dechlorinating agent, oxygen scavenger and process chemical. When dissolved in water, Sodium Metabisulphite forms bisulphite species. It is widely used in industrial water and wastewater treatment, residual-chlorine neutralisation, pulp and paper processing, textile processing, dye manufacturing, mining and mineral processing, leather treatment, chemical synthesis and other industrial reducing applications. The exact Sodium Metabisulphite assay, sulphur dioxide content, pH, iron, chloride, insoluble matter and moisture depend on the supplied grade and batch. These specifications should be confirmed through the latest batch-specific Certificate of Analysis. Mangalam Acid & Chemicals supplies Sodium Metabisulphite from Vapi, Gujarat, India, for bulk industrial requirements. Buyers should request the current Certificate of Analysis, Safety Data Sheet and grade declaration before confirming process or regulatory suitability.
| Molecular Formula | Na₂S₂O₅ |
| Appearance | White to pale-yellow crystalline powder |
| SO₂ Content | As per batch-specific COA |
| Solubility | Soluble in water |
| Grade | Industrial / Technical Grade |
Fields marked [Admin-editable] are maintained in the CMS and confirmed per batch. Contact us for specific grade requirements.