Salts & Minerals
Sodium Metabisulphite (SMBS)
White to off-white crystalline powder · CAS 7681-57-4
Test Report — Characteristics
| Characteristics | Results |
|---|---|
| Content (Na₂S₂O₅) | 97.0% Min spec — 97.10–97.28% result |
| SO₂ | 65.0% Min spec — 65.54% result |
| Iron (Fe) | 0.003% Max spec — 0.0012–0.002% result |
| Arsenic (As) | 0.0001% Max spec — 0.0001% result |
| Water Insoluble Matter | 0.05% Max spec — 0.02% result |
Values above are from Suraj Chemicals' own lab test reports on this product. Figures can vary slightly batch to batch — request a current test report / certificate of analysis with your order.
Applications
- Dechlorination and reducing agent in water treatment
- Boiler feed-water oxygen scavenger
- Food and beverage preservative (food grade also available)
- Photographic and textile bleach-bath reducing agent