Sodium Metabisulfite — CAS 7681-57-4

Sodium metabisulfite (Na₂S₂O₅, CAS 7681-57-4) is a widely used reducing and preservative agent, and a core raw material across food, water treatment, and industrial processing sectors. UAB An Group Export supplies it in food and technical grades, matched to each customer's process and application.

It is used across food and beverage preservation, water and wastewater treatment, photography and imaging chemicals, textile processing, and general industrial operations. Its reducing and antimicrobial properties make it a core process chemical for dechlorination, preservation, and antioxidant applications.

For industrial buyers, supply is coordinated around grade, particle size, volume, packaging, and delivery destination, in line with applicable product and transport regulations. Bulk and commercial orders are both handled — send your requirements and we'll prepare a quote covering supply, packaging, logistics, and delivery.

Key Applications

Food & Beverage PreservationUsed as a preservative and antioxidant in wine, dried fruit, and other food and beverage products (E223).

Water & Wastewater TreatmentUsed as a dechlorination agent to neutralize residual chlorine in water treatment systems.

Photography & ImagingUsed as a reducing agent in photographic developing solutions.

Textile ProcessingUsed as a bleaching and reducing agent in textile dyeing and finishing processes.

Chemical ManufacturingUsed as a raw material or reducing agent in select chemical formulations.

Rubber & Latex ProcessingUsed in select rubber and latex coagulation processes.

General ManufacturingSuitable grades may be used across a range of qualified industrial processes.

Supply & Packaging

Supplied according to your required grade (food or technical) and particle size, quantity, packaging, and destination. Depending on the order, options include bags, drums, or bulk shipment. Bulk quantities are available on request.

As a moisture-sensitive material that releases sulfur dioxide on decomposition, packaging, transport, and handling are arranged according to the product grade and applicable dangerous-goods or food-safety requirements.

Product Documentation

Available on request, depending on the specific product and supply arrangement:

• Safety Data Sheet (SDS)

• Certificate of Analysis (CoA)

• Technical Data Sheet (TDS)

• Product specifications

• Shipping and transport documentation

Compliance statement:

"All orders are subject to business registration verification prior to shipment. UAB An Group Export reserves the right to request additional documentation or decline an order where end use, destination, or buyer information cannot be adequately confirmed."

Request a Quote

Whether you need sodium metabisulfite for food preservation, water treatment, textile processing, or another qualified industrial purpose, provide your requirements and our team will review the available supply options.

For a quotation, please provide: required grade and particle size → quantity → packaging → application → delivery country/city or port → required delivery timeframe