Sodium metabisulphite, GR 98%+
Buy Sodium metabisulphite, GR 98%+ (CAS 7681-57-4) from Zemixal. Lab and bulk packs, batch COA, fast global delivery. Catalogue no. ZX-000977.
About Sodium metabisulphite, GR 98%+
Sodium metabisulphite, GR 98%+ sits in our synthetic, Protecting & Derivatization Reagents section and ships worldwide from stock or short lead time. For your records (AR), the material is defined by CAS 7681-57-4, formula Na2O5S2 and molar mass 190.11 g/mol. Typical appearance is white crystalline powder.
Use cases we see most often
- Organic synthesis
- Reaction development
- Medicinal chemistry
Safe handling
Literature values: melting point >300 °C and density 1.48 g/cm3. Hazard communication follows GHS (Danger: H302 and H318). Our SDS lists exposure controls and first-aid measures.
Available as 500 g, 1 kg, 5 kg and 4 x 25 kg. Larger or split packs can be arranged. Each lot travels with a batch certificate of analysis and a 16-section SDS. Request pricing online and we confirm availability, documentation and freight to your country.
Typical uses
- Organic synthesis
- Reaction development
- Medicinal chemistry
Applications
Grade guides
Specifications and identifiers
| Product name | Sodium metabisulphite, GR 98%+ |
|---|---|
| Catalogue number | ZX-000977 |
| CAS number | 7681-57-4 |
| Molecular formula | Na2O5S2 |
| Molar mass | 190.11 g/mol |
| Exact mass | 189.8983 |
| Grade | AR |
| Purity / assay | ≥98% |
| Physical form | Powder |
| Appearance | White crystalline powder |
| Melting point | >300 °C |
| Density | 1.48 g/cm3 |
| H-bond donors / acceptors | 0 / 6 |
| Topological polar surface area | 125 Ų |
| HS code | 28321090 |
| InChIKey | HRZFUMHJMZEROT-UHFFFAOYSA-L |
| SMILES | [O-]S(=O)S(=O)(=O)[O-].[Na+].[Na+] |
| PubChem CID | 656671 |
| Synonyms | Sodium disulfite, Sodium pyrosulfite, Sodium metabisulfite, Disodium pyrosulfite, Natrii disulfis, Campden Tablets, Disodium metabisulfite, Natrium pyrosulfit, sodium pyrosulphite, Sodium bisulfite anhydrous, Natrium metabisulfurosum, Sodium pyrosulfite (Na2S2O5) |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Danger
- H302Harmful if swallowed
- H318Causes serious eye damage
Precautionary statements P264, P264 + P265, P270, P280, P301 + P317, P305 + P354 + P338, P317, P330, P501
Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.
Pack sizes
| 500 g | Quoted on request | |
| 1 kg | Quoted on request | |
| 5 kg | Quoted on request | |
| 4 x 25 kg | Quoted on request |
Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.
Questions about Sodium metabisulphite, GR 98%+
Which CAS number identifies Sodium metabisulphite, GR 98%+?
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Other grades with CAS 7681-57-4
All 7 grades- CAS
- 7681-57-4
- Formula
- Na2O5S2
- MW
- 190.11 g/mol
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