Sodium Bi-Sulphite (Commercial Grade)
Cream crystalline powder · CAS 7631-90-5
DocumentsSpec sheet (PDF, 32 KB)Safety Data Sheet (PDF, 84 KB)
This is one of 2 grades in our Sodium Bisulphite — Commercial and Technical Grade. Compare all 2 grades →
Overview
Sodium Bi-Sulphite (Commercial Grade) is supplied with a tested assay of 35.49% as SO₂ (57.67% total purity) and a pH of 5.3 in 10% solution. This commercial grade is a cost-effective reducing and bleaching agent for textile and leather processing, dechlorination in water treatment, photographic fixing and ore flotation. If your process needs a higher SO₂ content (60% min), see the technical grade. Supplied from Chennai by Suraj Chemicals.
Specification Sheet — Characteristics
Download Specification Sheet (PDF)| Characteristics | Specifications |
|---|---|
| Assay as SO₂ % by Mass | 35.49% |
| Assay (Total Purity) % | 57.67% |
| pH of 10% Solution | 5.3 |
| Clarity of 10% Solution | Clear |
These values come from our own lab test on Sodium Bi-Sulphite. They vary slightly from batch to batch, so ask for a current certificate of analysis with your order.
Applications
- Reducing and bleaching agent in textile and leather processing
- Water-treatment de-chlorination
- Photographic fixing solutions
- Ore flotation and mineral processing
Safety & Handling Summary
| Topic | Summary |
|---|---|
| Signal word | Danger |
| GHS hazards | H302 — Harmful if swallowed H318 — Causes serious eye damage H335 — May cause respiratory irritation H031 — Contact with acids liberates toxic gas (sulphur dioxide) |
| Incompatible with | Incompatible with, Reason/Effect |
| Gloves | Chemical-resistant gloves (nitrile or neoprene) |
| Eye / face | Chemical splash goggles; face shield for bulk handling |
| Respiratory | Filter mask for acid gases (type E) recommended where dust or SO2 fume may be generated |
| Body | Acid-resistant apron/overalls for bulk handling; safety footwear |
| Transport (road) | Confirm the shipping classification with us before dispatch — see Section 14 of the SDS |
| Emergency handling | First aid, fire-fighting and spill / release measures are in Sections 4–6 of the SDS. Emergency contact: +91 70927 22822 / +91 98402 84032. |
A summary of the Sodium Bi-Sulphite Safety Data Sheet. The full SDS is the authority: download it at the top of this page and read it before first use. Hazard ratings can change with grade and concentration, so confirm the transport class for each consignment.
Frequently Asked Questions
What is Sodium Bi-Sulphite (Commercial Grade)?
Sodium Bi-Sulphite is supplied by Suraj Chemicals as cream crystalline powder, identified by CAS number 7631-90-5. It falls under our Salts & Minerals range — see the Specification Sheet table above for its full characteristics.
What is Sodium Bi-Sulphite used for?
Typical applications include: Reducing and bleaching agent in textile and leather processing; Water-treatment de-chlorination; Photographic fixing solutions; Ore flotation and mineral processing.
How should Sodium Bi-Sulphite be stored and handled?
Store sealed in a dry, cool area away from moisture and oxidizers.
What packaging and pack sizes does Suraj Chemicals supply Sodium Bi-Sulphite in?
50 kg bags. Contact us if you need a different pack size, or a bulk/tanker quantity.
What is the shelf life of Sodium Bi-Sulphite?
Typically 3–6 months from date of manufacture when stored sealed, in a cool place away from direct sunlight and heat. Active content in hypochlorite / oxidising products declines gradually over time, so this is one to watch closely. 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 Bi-Sulphite hazardous to handle?
Yes. Sodium Bi-Sulphite is classified under GHS (signal word: Danger) as: harmful if swallowed (H302); causes serious eye damage (H318); may cause respiratory irritation (H335); contact with acids liberates toxic gas (sulphur dioxide) (H031). Follow the storage and handling guidance above, use appropriate PPE, and download the Safety Data Sheet (SDS/MSDS) in the sidebar above for full GHS hazard, handling and PPE details.
Is a Specification Sheet, TDS or MSDS available for Sodium Bi-Sulphite?
Yes. a downloadable Specification Sheet (PDF) with full characteristics and specifications is available above, and a downloadable Safety Data Sheet (SDS/MSDS) for Sodium Bi-Sulphite is also available above.
Can I get a sample or discuss order quantity for Sodium Bi-Sulphite?
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 Bi-Sulphite.
Actual packaging as supplied by Suraj Chemicals
CAS Number
7631-90-5
Also Known As
Sodium Hydrogen Sulfite, Sodium Bisulfite
Chemical Formula
NaHSO3
Grade
Commercial Grade (own lab-tested)
Appearance
Cream crystalline powder
Packaging
50 kg bags
Storage & Handling
Store sealed in a dry, cool area away from moisture and oxidizers.
Shelf Life
Typically 3–6 months from date of manufacture when stored sealed, in a cool place away from direct sunlight and heat. Active content in hypochlorite / oxidising products declines gradually over time, so this is one to watch closely. 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.