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Sodium Compounds

Sodium Metabisulphite

Manufacturer & Supplier — CAS 7681-57-4. Supplied ex-India in export-compliant packing with Certificate of Analysis, Material Safety Data Sheet and complete shipping documentation.

Sodium Metabisulphite — representative photo: white crystalline powder
White crystalline powder · ≥98% Technical
Standard export packing, India origin
Representative image — actual appearance may vary
Structural Formula
sodium-metabisulphite molecular structure
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Applications

  • Food preservative
  • Water dechlorination
  • Bulk industrial supply for inorganic salts & compounds applications

Product Information

CAS Number
7681-57-4
Molecular Formula
Na2O5S2
Molecular Weight
190.11 g/mol
Common Names
Sodium metabisulfite, Smbs
Appearance
White crystalline powder
Grade / Purity
≥98% Technical
Density
Specific gravity: 1.4 at 25 °C/4 °C
Boiling Point
Decomposes (NIOSH, 2024)
Primary Application
Food preservative, water dechlorination
Product Group
Sodium Compounds

Product Description

Scapex Exports Pvt. Ltd., Ahmedabad, Gujarat, is actively engaged as a manufacturer, supplier and exporter of a wide range of Sodium Metabisulphite, which includes ≥98% Technical material for sodium compounds applications.

Sodium Metabisulphite is manufactured and supplied by Scapex Exports Pvt. Ltd. as white crystalline powder conforming to ≥98% Technical. The material is sourced from audited manufacturing partners in India, released against a batch Certificate of Analysis and packed for international freight in the pack sizes your process requires.

Within our inorganic salts & compounds range this product sits under Sodium Compounds, and is used principally in food preservative, water dechlorination. Every consignment ships with the documentation set required for customs clearance and incoming-goods inspection at destination.

Sodium Metabisulphite is also known as (synonyms): Sodium metabisulphite, Sodium metabisulfite, Smbs, Na2O5S2, CAS 7681-57-4.

Specification

Product NameSodium Metabisulphite
C.A.S. Number7681-57-4
Molecular FormulaNa2O5S2
Molecular Weight190.11 g/mol
DensitySpecific gravity: 1.4 at 25 °C/4 °C
Boiling PointDecomposes (NIOSH, 2024)
Melting Point>302 °F (decomposes)
CategoryInorganic Salts & Compounds
Product GroupSodium Compounds
Grade / Purity≥98% Technical
AppearanceWhite crystalline powder
Primary ApplicationFood preservative, water dechlorination
GHS ClassificationNot classified as dangerous for transport — see the Material Safety Data Sheet (MSDS)
Country of OriginIndia
PackingBags, drums, carboys, IBC or ISO tank as applicable. Customer-specified packing available.
DocumentationCOA, MSDS, TDS, Certificate of Origin
Minimum OrderQuoted against enquiry — trial and container quantities both supported

The specification shown is the standard commercial grade. Scapex supplies against customer-specified assay limits and pharmacopoeial or industry standards — share your specification sheet and we will confirm compliance before order.

Frequently Asked Questions

Do you export Sodium Metabisulphite from India?

Yes. Scapex Exports supplies Sodium Metabisulphite from India to buyers worldwide, including China, United States, United Arab Emirates, Vietnam, Bangladesh, Brazil and every other market listed on this page. Shipments move from Mundra, Nhava Sheva, Kandla, Hazira and Chennai on FOB, CFR or CIF terms.

What is the CAS number of Sodium Metabisulphite?

The CAS number of Sodium Metabisulphite is 7681-57-4.

Can you supply a COA and SDS for Sodium Metabisulphite?

Yes. A Certificate of Analysis against the agreed specification and a 16-section GHS Material Safety Data Sheet are supplied with every consignment, and both are downloadable from this page before you order.

What is the minimum order quantity for Sodium Metabisulphite?

Trial quantities and full container loads are both supported. The minimum depends on the grade, the packing and the destination — send your requirement and we will confirm.

What grade of Sodium Metabisulphite do you supply?

The standard commercial grade is ≥98% Technical, supplied as white crystalline powder. Other grades are available against your written specification — send the assay limits or pharmacopoeial reference you work to and we will confirm compliance before order.

What is Sodium Metabisulphite?

Sodium Metabisulphite (CAS 7681-57-4) is supplied as a white crystalline powder, with the molecular formula Na2O5S2 and a molecular weight of 190.11 g/mol. Its main applications include food preservative and water dechlorination. Scapex Exports exports and supplies it from India in ≥98% Technical grade, with a batch Certificate of Analysis (COA) and MSDS.

What is Sodium Metabisulphite used for?

The main applications of Sodium Metabisulphite are food preservative and water dechlorination.

Global Sourcing Desk

Tell us the product, grade and destination port.

Send the specification you work to — we confirm the grade, packing, documentation set and CIF/FOB price within one business day.