Sodium Hydrosulphite (Sodium Dithionite)
White to greyish-white crystalline powder, faint sulphurous odour · CAS 7775-14-6
Overview
Sodium Hydrosulphite (Sodium Dithionite) (CAS 7775-14-6) is one of the salts & minerals products Suraj Chemicals supplies to industrial, institutional and manufacturing buyers across India from our Chennai base. It is commonly used for reducing/bleaching agent in textile dyeing and vat-dye stripping; pulp and paper bleaching; water-treatment dechlorination, among other applications in the salts & minerals category. We pack Sodium Hydrosulphite (Sodium Dithionite) in 50 kg bags (moisture-proof lined), and can arrange bulk, drum or tanker quantities for larger requirements — full characteristics, applications and downloadable documentation are below, or you can request a quote directly.
Specification Sheet — Characteristics
Download Specification Sheet (PDF)| Characteristics | Specifications |
|---|---|
| Assay (Na2S2O4) | 85% Min |
| Moisture | 1% Max |
| Iron (as Fe) | 0.005% Max |
Values above are well-established typical/standard specification properties for this product, compiled from published technical references — not a batch-specific lab report. Figures can vary batch to batch — request a current certificate of analysis with your order.
Applications
- Reducing/bleaching agent in textile dyeing and vat-dye stripping
- Pulp and paper bleaching
- Water-treatment dechlorination
Frequently Asked Questions
What is Sodium Hydrosulphite (Sodium Dithionite)?
Sodium Hydrosulphite (Sodium Dithionite) is supplied by Suraj Chemicals as white to greyish-white crystalline powder, faint sulphurous odour, identified by CAS number 7775-14-6. It falls under our Salts & Minerals range — see the Specification Sheet table above for its full characteristics.
What is Sodium Hydrosulphite (Sodium Dithionite) used for?
Typical applications include: Reducing/bleaching agent in textile dyeing and vat-dye stripping; Pulp and paper bleaching; Water-treatment dechlorination.
How should Sodium Hydrosulphite (Sodium Dithionite) be stored and handled?
Store sealed in a cool, dry place away from moisture and acids — decomposes and can self-heat if damp.
What packaging and pack sizes does Suraj Chemicals supply Sodium Hydrosulphite (Sodium Dithionite) in?
50 kg bags (moisture-proof lined). Contact us if you need a different pack size, or a bulk/tanker quantity.
What is the shelf life of Sodium Hydrosulphite (Sodium Dithionite)?
Typically around 12 months from date of manufacture in original, unopened packaging, stored in a cool, dry place away from moisture. Extended exposure to humid air can affect this product's quality, so keep containers tightly resealed between uses and avoid part-used bags sitting open. 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 Hydrosulphite (Sodium Dithionite) hazardous to handle?
No specific hazard is flagged for Sodium Hydrosulphite (Sodium Dithionite) beyond standard industrial chemical handling precautions. We still recommend you download the Safety Data Sheet (SDS/MSDS) in the sidebar above for full GHS hazard, handling and PPE details, as good practice for any industrial chemical.
Is a Specification Sheet, TDS or MSDS available for Sodium Hydrosulphite (Sodium Dithionite)?
Yes — a downloadable Specification Sheet (PDF) with full characteristics and specifications is available above, and a downloadable Safety Data Sheet (SDS/MSDS) for Sodium Hydrosulphite (Sodium Dithionite) is also available above.
Can I get a sample or discuss order quantity for Sodium Hydrosulphite (Sodium Dithionite)?
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 Hydrosulphite (Sodium Dithionite).