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Sodium Metabisulphate

Sodium Metabisulphate

CAS Number: 7681-57-4

Molecular Formula: Na2S2O5

About Sodium Metabisulphate

Sodium Pyrosulfite CAS 7681-57-4 serves as a critical antioxidant and excipient in the API intermediates market, where its 99% pharmaceutical-grade purity is essential for stabilizing sensitive molecules like adrenaline and various parenteral formulations against oxidative degradation. Disodium Metabisulfite has seen i...

Sodium Metabisulphate Specifications

CAS Number
7681-57-4
Molecular Formula
Na2S2O5
Molecular Weight
190.11 g/mol
IUPAC Name
sodium metabisulfite
Canonical SMILES
[O-]S(=O)(=O)S(=O)(=O)[O-].[Na+].[Na+]
InChI Key
HRZFUMHJMZEROT-UHFFFAOYSA-L
Molecular Weight
190.11 g/mol

Food Preservative

A versatile additive used to inhibit microbial growth and prevent enzymatic browning in processed foods, dried fruits, and seafood

Antioxidant and Excipient

A stabilizer used in pharmaceutical formulations and injectable medications to prevent the oxidation of active ingredients like adrenaline

Dechlorination Agent

A reducing agent employed in water treatment to neutralize residual chlorine and protect aquatic life or sensitive downstream equipment

Bleaching and Reducing Agent

A chemical used in the textile and paper industries for bleaching fibers and as an antichlor after chlorine treatments

Photographic Chemical

A key component in developing solutions and fixing baths used to stabilize images and prevent oxidation

Gold Mining Reagent

A source of sulfur dioxide used for the destruction of cyanide and the precipitation of elemental gold in commercial mining processes.

Sodium Metabisulphate FAQs

Minimum Order Quantity

25 kg (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

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