Sodium Metabisulphite (SMBS)
White to off-white crystalline powder · CAS 7681-57-4
Test Report — Characteristics
Download Test Report (PDF)| Characteristics | Specifications |
|---|---|
| Content (Na₂S₂O₅) | 97.0% Min |
| SO₂ | 65.0% Min |
| Iron (Fe) | 0.003% Max |
| Arsenic (As) | 0.0001% Max |
| Water Insoluble Matter | 0.05% Max |
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
Frequently Asked Questions
What is Sodium Metabisulphite (SMBS)?
Sodium Metabisulphite (SMBS) is supplied by Suraj Chemicals as white to off-white crystalline powder, identified by CAS number 7681-57-4. It falls under our Salts & Minerals range — see the Test Report table above for its full characteristics.
What is Sodium Metabisulphite (SMBS) used for?
Typical applications include: 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.
How should Sodium Metabisulphite (SMBS) be stored and handled?
Store sealed in a dry, cool area away from moisture and oxidizers — releases SO₂ gas when damp.
What packaging and pack sizes does Suraj Chemicals supply Sodium Metabisulphite (SMBS) in?
25/50 kg bags; bulk supply on request. Contact us if you need a different pack size, or a bulk/tanker quantity.
Is Sodium Metabisulphite (SMBS) hazardous to handle?
Yes — Sodium Metabisulphite (SMBS) is an oxidizing agent and should be kept away from combustible or organic material. Follow the storage and handling guidance above, use appropriate PPE, and download the Safety Data Sheet (SDS/MSDS) in the sidebar above for full GHS hazard, handling and PPE details.
Is a Test Report, TDS or MSDS available for Sodium Metabisulphite (SMBS)?
Yes — a downloadable Test Report (PDF) with full characteristics, specifications and results is available above, and a downloadable Safety Data Sheet (SDS/MSDS) for Sodium Metabisulphite (SMBS) is also available above.
Can I get a sample or discuss order quantity for Sodium Metabisulphite (SMBS)?
Yes — use the Request Price & Availability button or WhatsApp us with your required quantity, and our team will confirm pricing, minimum order quantity, sample availability and delivery timelines for Sodium Metabisulphite (SMBS).