Which Sodium Dithionite grade should be specified for textile dyeing or pulp bleaching?

Select the grade against the process target, not the CAS number alone. Confirm required active content, reducing power, iron, insoluble matter, pH and application test method. Send your current specification or COA so the offered grade can be compared before sampling or bulk quotation.

What must be confirmed before quoting a bulk shipment of Sodium Dithionite CAS 7775-14-6?

Please provide required assay, quantity, packing, destination port and delivery term. Sodium Dithionite is moisture sensitive and shipped under UN 1384 controls, so drum sealing, dangerous-goods route, documentation and local import requirements must be checked for the specific destination before order confirmation.

Sodium Dithionite (Sodium Hydrosulfite) CAS 7775-14-6

Sodium Dithionite (Sodium Hydrosulfite) CAS 7775-14-6, also known as Sodium Hydrosulphite, is an industrial reducing agent used in textile dyeing, pulp and paper bleaching, mineral processing and reduction clearing. When comparing inorganic sulfur reducing agents, Sodium Metabisulfite is a related product to check separately by assay, stability, packing and application conditions.

Industrial grades are available in 85%, 88% and 90% options, subject to specification confirmation. Standard packing is 50 kg sealed steel drums with a moisture-resistant PE liner. COA, TDS and SDS can be provided for the offered grade or lot.

CAS: 7775-14-6
Synonyms: Sodium Hydrosulfite; Sodium Hydrosulphite; Sodium Dithionite
Einecs: 231-890-0
Molecular Formula: Na2S2O4
Grade: Industrial Grade; assay options subject to specification confirmation
Package: 50 kg sealed steel drums with moisture-resistant PE liner

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Product Description

1 Product Introduction

2 Applications

3 Offered Grade and Documentation

Product Introduction

Sodium Dithionite (CAS 7775-14-6), also known as Sodium Hydrosulfite, is supplied as an industrial reducing agent for textile, pulp-and-paper and process-chemical applications. We quote the material against the stated operating use and required test items, rather than treating the CAS number as a complete grade specification.

Applications

Textile dyeing and printing, including reduction of vat dyes and selected sulphur-dye processes.
Pulp, paper and recycled-fibre bleaching or decolourisation processes that specify sodium dithionite.
Textile stripping, colour-correction and reductive cleaning operations using an approved process formulation.
Industrial chemical processes requiring a sodium dithionite reducing agent.

Offered Grade and Documentation

For an industrial order, we confirm the required assay or reducing power, iron, water-insoluble matter, stabiliser system, packing format and stated test method. The available packaging and batch release data are confirmed for the offered grade. A batch COA, with the applicable TDS and SDS, is available with the supply documentation.

For related reducing-agent and inorganic salt pages, review Sodium Metabisulfite, Anhydrous Sodium Thiosulfate, and Sodium Hypophosphite.

FAQ - Technical & Supply Chain

Q:
Which Sodium Dithionite grade should be specified for textile dyeing or pulp bleaching?

A: Select the grade against the process target, not the CAS number alone. Confirm required active content, reducing power, iron, insoluble matter, pH and application test method. Send your current specification or COA so the offered grade can be compared before sampling or bulk quotation.
Q:
What must be confirmed before quoting a bulk shipment of Sodium Dithionite CAS 7775-14-6?

A: Please provide required assay, quantity, packing, destination port and delivery term. Sodium Dithionite is moisture sensitive and shipped under UN 1384 controls, so drum sealing, dangerous-goods route, documentation and local import requirements must be checked for the specific destination before order confirmation.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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