Description
SODIUM BISULPHITE
Sodium Hydrogen Sulphite | Technical • Industrial Grades
Sodium Bisulphite (Sodium Hydrogen Sulphite) is a
white crystalline powder with a mild sulphurous odour, used as a
reducing agent, preservative and dechlorinating agent.
⚙️ Technical Grade🏭 Industrial Grade
🧾 1. Product Identification
| Product Name | Sodium Bisulphite |
|---|---|
| Common Name | Sodium Hydrogen Sulphite |
| Chemical Name | Sodium Bisulphite |
| Chemical Formula | NaHSO₃ |
| Grade | Technical Grade / Industrial Grade |
⚗️ 2. Physical & Chemical Properties
| Appearance | White to slightly yellow crystalline powder |
|---|---|
| Odour | Mild sulphurous odour |
| Physical State | Solid crystalline powder |
| Solubility | Soluble in water |
| Chemical Nature | Reducing agent |
📐 3. Grade-wise Specifications
| Parameter | Technical Grade | Industrial Grade |
|---|---|---|
| Assay (as NaHSO₃) | ≥ 58.5% | ≥ 65.0% |
| SO₂ Content | ≥ 60.0% | ≥ 62.0% |
| Iron (Fe) | ≤ 0.005% | ≤ 0.01% |
| Heavy Metals (as Pb) | ≤ 10 ppm | ≤ 20 ppm |
| Water Insoluble Matter | ≤ 0.05% | ≤ 0.1% |
| Appearance | White to slightly yellow crystalline powder | White to slightly yellow crystalline powder |
🧪 4. Applications & Uses
💧 Water treatment – dechlorination of treated/waste water
🎨 Textile & dyeing – bleaching agent and reducing agent
📷 Photography – developer preservative
🧴 Leather industry – tanning process auxiliary
🍇 Food/beverage industry – antimicrobial preservative, antioxidant
⚗️ Chemical manufacturing – reducing agent in synthesis
🛢️ Oilfield chemicals – oxygen scavenger
🏚️ 5. Storage & Handling
| Storage Condition | Store in a cool, dry, well-ventilated area away from oxidizing agents and heat. |
|---|---|
| Shelf Life | 1 year from date of manufacture in original sealed packaging (gradually oxidizes on exposure to air) |
| Hazard Classification | Irritant to eyes, skin and respiratory tract. Releases SO₂ gas on contact with acids. |
| Regulatory Status | Industrial and technical-grade use |
| Packaging | 25 Kg Bags |
| Documents Available | Certificate of Analysis (COA), MSDS available on request |
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