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VWR Sodium sulphite 95.0-100.5%, AnalaR NORMAPUR® Reag. Ph. Eur. analytical reagent
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Formula: Na₂SO₃
CAS Number: 7757-83-7
Specifications:
| Application | Analytical Chemistry | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | VWR | ||
| Product Grade | Analytical grade | Formula | Na₂SO₃ |
VWR Sodium Sulphite (Na₂SO₃) is a high-purity inorganic reducing agent with an assay range of 95.0–100.5%, compliant with European Pharmacopoeia (Ph. Eur.) standards. Supplied under the AnalaR NORMAPUR® label, it is intended for use in analytical chemistry, oxygen removal, photographic processing, and water treatment applications.
This reagent-grade sulphite is provided as a white crystalline solid, offering consistent solubility and performance for quantitative analysis and chemical synthesis.
Product Specifications
| Property | Value |
|---|---|
| Product Name | Sodium Sulphite |
| Grade | AnalaR NORMAPUR®, Reag. Ph. Eur. |
| Chemical Formula | Na₂SO₃ |
| Molecular Weight | 126.04 g/mol |
| CAS Number | 7757-83-7 |
| MDL Number | MFCD00003503 |
| Merck Index | 13,08757 |
| EINECS Number | 231-821-4 |
| REACH Registration | 01-2119537420-49 |
| Melting Point | >500 °C |
| Density (20 °C) | 2.63 g/cm³ |
| Storage Temperature | Ambient |
| Physical Form | White crystalline solid |
| Assay Range (on dry basis) | 95.0–100.5% |
| Silica (SiO₂) Content | 25.6–27.6% |
| Sodium Oxide (Na₂O) Content | 7.5–8.5% |
Packaging Options
| Catalog Number | Pack Type | Pack Size |
|---|---|---|
| 28130.260 | Plastic bottle (solid) | 500 g |
| 28130.292 | Plastic bottle (solid) | 1 kg |
Applications
- Reducing agent in analytical chemistry and titrimetric analysis
- Oxygen scavenger in boiler water treatment
- Preservative in photographic and dye processes
- Antioxidant additive in industrial and environmental testing
- Dechlorination agent in water purification systems
- Used in sulphite-based reagent formulations and sample preservation
VWR Sodium Sulphite 95.0–100.5%, AnalaR NORMAPUR® provides dependable quality for use in regulated analytical testing, industrial chemistry, and environmental procedures. Its compliance with Ph. Eur. specifications ensures suitability in applications where purity, reducing capability, and consistency are essential.
- Pack Size: 1kg 500g