Sodium Metabisulphite (SMBS) — Magna Brand
White to off-white crystalline powder · CAS 7681-57-4
Magna Brand, supplied in the manufacturer’s original packing. Also see our standard Sodium Metabisulphite (SMBS) page.
This is one of 7 grades in our Sodium Metabisulphite (SMBS) — Magna Brand — Industrial and Food Grades. Compare all 7 grades →
Overview
Sodium Metabisulphite (SMBS) Magna Brand is a crystalline SMBS with at least 97% Na₂S₂O₅ and 65% SO₂, offered as an alternative make when price or availability matters. It is used for dechlorination in water treatment, as a boiler feed-water oxygen scavenger and in textile and photographic reducing baths. Compare with Aditya Birla and Lion Brand (China); we will quote whichever make is in stock. Supplied from Chennai by Suraj Chemicals.
Specification Sheet — Characteristics
Download Specification Sheet (PDF)| Characteristics | Specifications |
|---|---|
| Appearance | White to off-white crystalline powder |
| Content (Na₂S₂O₅) | 97.0% Min |
| SO₂ | 65.0% Min |
| Iron (Fe) | 0.005% Max |
| Water insoluble matter | 0.05% Max |
| pH (5% solution) | 4.0 – 5.0 |
Values above are typical specification values for this grade from manufacturer / published reference data — not a batch-specific lab report. A current certificate of analysis is supplied with every 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
Safety & Handling Summary
| Topic | Summary |
|---|---|
| Signal word | Warning |
| GHS hazards | H302 — Harmful if swallowed H315 — Causes skin irritation H319 — Causes serious eye irritation H335 — May cause respiratory irritation |
| Incompatible with | Acids, water/moisture, powdered potassium/sodium metals, alkali and oxidizing agents, chlorates |
| Gloves | Protective gloves as needed to prevent excessive skin contact |
| Eye / face | Protective eyeglasses or goggles per OSHA 29 CFR 1910.133 |
| Respiratory | Follow OSHA respirator regulations (29 CFR 1910.134); wear an MSHA/NIOSH-approved respirator selected for the working conditions. Wear SCBA for emergency or non-routine operations (spill cleanup, reactor vessels, storage tanks) |
| Body | Protective boots and clothing when necessary to prevent excessive skin contact |
| Transport (road) | Confirm the shipping classification with us before dispatch — see Section 14 of the SDS |
| Emergency handling | First aid, fire-fighting and spill / release measures are in Sections 4–6 of the SDS. Emergency contact: +91 70927 22822 / +91 98402 84032. |
Summary of the product's Safety Data Sheet (SDS), which is the authority — download it above and read it before first use. Ratings can differ by grade and concentration; confirm transport classification for each consignment.
Frequently Asked Questions
What is Sodium Metabisulphite (SMBS) — Magna Brand?
Sodium Metabisulphite (SMBS) — Magna Brand 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 Specification Sheet table above for its full characteristics.
What is Sodium Metabisulphite (SMBS) — Magna Brand 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) — Magna Brand 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) — Magna Brand in?
25/50 kg bags; bulk supply on request. Contact us if you need a different pack size, or a bulk/tanker quantity.
What is the shelf life of Sodium Metabisulphite (SMBS) — Magna Brand?
Typically 3–6 months from date of manufacture when stored sealed, in a cool place away from direct sunlight and heat. Active content in hypochlorite / oxidising products declines gradually over time, so this is one to watch closely. As with any industrial chemical, request the current batch's manufacturing date and a fresh certificate of analysis for orders where exact remaining shelf life matters.
Is Sodium Metabisulphite (SMBS) — Magna Brand hazardous to handle?
Yes — Sodium Metabisulphite (SMBS) — Magna Brand is classified under GHS (signal word: Warning) as: harmful if swallowed (H302); causes skin irritation (H315); causes serious eye irritation (H319); may cause respiratory irritation (H335). 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 Specification Sheet, TDS or MSDS available for Sodium Metabisulphite (SMBS) — Magna Brand?
Yes — a downloadable Specification Sheet (PDF) with full characteristics and specifications is available above, and a downloadable Safety Data Sheet (SDS/MSDS) for Sodium Metabisulphite (SMBS) — Magna Brand is also available above.
Can I get a sample or discuss order quantity for Sodium Metabisulphite (SMBS) — Magna Brand?
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) — Magna Brand.
Actual packaging as supplied by Suraj Chemicals
CAS Number
7681-57-4
Also Known As
Sodium Metabisulfite, SMBS, Disodium Disulfite, Sodium Pyrosulfite
Chemical Formula
Na2S2O5
Grade
Technical / Industrial Grade
Appearance
White to off-white crystalline powder
Packaging
25/50 kg bags; bulk supply on request
Storage & Handling
Store sealed in a dry, cool area away from moisture and oxidizers — releases SO₂ gas when damp.
Shelf Life
Typically 3–6 months from date of manufacture when stored sealed, in a cool place away from direct sunlight and heat. Active content in hypochlorite / oxidising products declines gradually over time, so this is one to watch closely. As with any industrial chemical, request the current batch's manufacturing date and a fresh certificate of analysis for orders where exact remaining shelf life matters.