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VWR Sodium metabisulphite ≥98.0%, AnalaR NORMAPUR® analytical reagent
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Specifications:
| Application | Analytical Chemistry | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | VWR | ||
| Product Grade | Analytical grade | Formula | Na₂S₂O₅ |
VWR Sodium Metabisulphite (Na₂S₂O₅) is a high-purity, crystalline reagent with a minimum assay of ≥98.0%, suitable for analytical chemistry, sample preservation, and reducing applications. This AnalaR NORMAPUR® grade compound is widely used for its antioxidant, preservative, and reducing properties in laboratories and regulated industrial environments.
With excellent solubility in water and a well-established safety and performance profile, it is suitable for volumetric analysis, colorimetric assays, and as a sulfur dioxide source in various chemical protocols.
Product Specifications
| Property | Value |
|---|---|
| Product Name | Sodium Metabisulphite |
| Grade | AnalaR NORMAPUR® Analytical Reagent |
| Chemical Formula | Na₂S₂O₅ |
| Molecular Weight | 190.11 g/mol |
| CAS Number | 7681-57-4 |
| MDL Number | MFCD00167602 |
| Merck Index | 12,08784 |
| EINECS Number | 231-673-0 |
| REACH Registration | 01-2119531326-45 |
| Melting Point | 150 °C |
| Density (20 °C) | 1.48 g/cm³ |
| GHS Classification | GHS05 (Corrosive), GHS07 (Irritant) |
| Storage Temperature | Ambient |
| Physical Form | White crystalline powder |
Packaging
| Catalog Number | Pack Type | Pack Size |
|---|---|---|
| 27920.295 | Plastic bottle (solid) | 1 kg |
Applications
- Reducing agent in chemical synthesis and analytical reactions
- Preservative in sample preparation and solution stabilization
- Antioxidant in food and chemical formulations (non-food grade)
- Sulfur dioxide generator in chemical reactions and treatment
- Volumetric reagent in iodometric titrations
- Dechlorinating agent in water treatment protocols
- Component in textile and paper processing
Safety and Handling
- Irritant – may cause eye, skin, and respiratory irritation
- Corrosive – avoid contact with mucous membranes and prolonged exposure
- Use PPE including gloves, goggles, and lab coat
- Ensure proper ventilation or use under a fume hood
- Store in a cool, dry, well-sealed container
- Refer to the Safety Data Sheet (SDS) for full safety instructions
VWR Sodium Metabisulphite ≥98.0%, AnalaR NORMAPUR® offers dependable performance for analytical and general-purpose reducing applications. With a well-controlled purity profile and broad compatibility, it is a reliable choice for laboratories and technical industries requiring a versatile, high-quality sulfur-based reagent.