Sodium Sulphite
White to off-white powder · CAS 7757-83-7
DocumentsSpec sheet (PDF, 31 KB)Safety Data Sheet (PDF, 83 KB)
Overview
Sodium Sulphite (CAS 7757-83-7) 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 oxygen scavenger in boiler feed-water treatment; photographic and dye-industry reducing agent; pulp and paper (sulphite process), among other applications in the salts & minerals category. We pack Sodium Sulphite in 25/50 kg HDPE bags, 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 as Na₂SO₃ | 80% by mass |
| pH of 10% Solution | 8.2 |
| Clarity of 10% Solution | Slight hazy |
These values come from our own lab test on Sodium Sulphite. They vary slightly from batch to batch, so ask for a current certificate of analysis with your order.
Origin
- Imported – China
A certificate of analysis is supplied with every batch.
Applications
- Oxygen scavenger in boiler feed-water treatment
- Photographic and dye-industry reducing agent
- Pulp and paper (sulphite process)
- Textile dye-bath reducing agent
Safety & Handling Summary
| Topic | Summary |
|---|---|
| Signal word | Warning |
| GHS hazards | H315 — Causes skin irritation H319 — Causes serious eye irritation |
| Incompatible with | Incompatible with, Reason/Effect |
| Gloves | Chemical-resistant gloves (nitrile or PVC) |
| Eye / face | Safety glasses with side shields or chemical splash goggles |
| Respiratory | Not normally required under good ventilation. If dust levels exceed exposure limits, use a filtering half-mask respirator (type P1/P2 or FFP2) |
| Body | Standard work clothing; dust-resistant overalls for prolonged handling |
| 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 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 Sulphite?
Sodium Sulphite is supplied by Suraj Chemicals as white to off-white powder, identified by CAS number 7757-83-7. It falls under our Salts & Minerals range — see the Specification Sheet table above for its full characteristics.
What is Sodium Sulphite used for?
Typical applications include: Oxygen scavenger in boiler feed-water treatment; Photographic and dye-industry reducing agent; Pulp and paper (sulphite process); Textile dye-bath reducing agent.
How should Sodium Sulphite be stored and handled?
Store sealed in a dry area away from moisture and oxidizers.
What packaging and pack sizes does Suraj Chemicals supply Sodium Sulphite in?
25/50 kg HDPE bags. Contact us if you need a different pack size, or a bulk/tanker quantity.
What is the shelf life of Sodium 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 Sulphite hazardous to handle?
Yes. Sodium Sulphite is classified under GHS (signal word: Warning) as: causes skin irritation (H315); causes serious eye irritation (H319). 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 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 Sulphite is also available above.
Can I get a sample or discuss order quantity for Sodium 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 Sulphite.
Actual packaging as supplied by Suraj Chemicals
CAS Number
7757-83-7
Appearance
White to off-white powder
Packaging
25/50 kg HDPE bags
Storage & Handling
Store sealed in a dry 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.