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Sodium Sulphite (Na2SO3) is a high-purity, food and photo-grade chemical powder designed specifically for specialized industrial applications in the pulp & paper, water treatment, photography, and food sectors. This white crystalline powder comes with a guaranteed minimum assay of 97%, ensuring superior chemical performance and consistent quality for critical processes. It functions effectively as an antioxidant, antichlor agent, enzyme inhibitor, and oxygen scavenger, making it ideal for reducing chemical degradation, preserving photographic materials, and treating water. With strict control over impurities — including low iron content (≤10 ppm), low sulphate content (≤2.5%), and minimal heavy metal presence (≤20 ppm) — this product meets rigorous international standards for food safety and industrial usage. Its low moisture content (≤0.1%) and stable powder form allow for extended shelf life and easy handling, shipped securely in 25kg bags suitable for high-volume procurement. Sodium Sulphite’s reliable compositional accuracy and contamination-free profile make it an essential chemical for companies seeking dependable performance in bleaching, water dechlorination, photographic preservation, and food processing.
Key Features
| Features | Description |
|---|---|
| Purity Assay | Minimum 97% ensures high chemical purity and efficiency |
| Iron Content | Low iron content of ≤10 ppm to prevent discoloration and contamination |
| Sulphate Content | Maintained at ≤2.5% to limit impurity levels |
| Heavy Metals | Heavy metals content limited to ≤20 ppm for safety compliance |
| Moisture Content | Minimal moisture at ≤0.1% for improved shelf life and handling |
| Form | Fine white powder enabling easy mixing and application |
| Packaging | Durable 25kg bags for safe transport and storage |
| Applications | Used as antioxidant, antichlor, enzyme inhibitor, and oxygen scavenger |
| Compliance | Food/photo grade quality suitable for stringent industrial standards |
| Stability | Stable during storage, maintaining performance over time |
| Attributes | Description |
|---|---|
| Chemical Formula | Na2SO3 |
| CAS Number | 7757-83-7 |
| Assay (Purity) | ≥ 97% |
| Sulphate Content | ≤ 2.5% |
| Insolubles | ≤ 0.1% |
| Moisture | ≤ 0.1% |
| Iron (Fe) | ≤ 10 ppm |
| Heavy Metals (Pb) | ≤ 20 ppm |
| Physical Form | Powder |
| Packaging Size | 25 kg bags |
| Color | White |
*Disclaimer: The above description has been AI-generated and has not been audited or verified for accuracy. It is recommended to verify product details independently before making any purchasing decisions.
This Sodium Sulphite meets strict purity criteria with a minimum assay of 97%, low iron (≤10 ppm), low sulphate (≤2.5%), and very low heavy metals (≤20 ppm), ensuring it is free from contaminants that could affect food safety or photographic material integrity.
With moisture content ≤0.1%, the powder remains free-flowing, reduces clumping during storage and transportation, and maintains stable performance, critical for processes requiring precise dosing and chemical reactivity.
Yes, it acts as an effective antichlor and oxygen scavenger in water treatment applications, helping to neutralize chlorine and protect equipment from corrosion.
Absolutely, the product is supplied in 25kg durable bags designed for large-scale procurement and export, making it ideal for chemical manufacturers, water treatment plants, and food processing units.
It meets global quality standards including precise assay levels, low impurity thresholds, and packaging norms ensuring it’s suitable for international shipping and industrial use.
The product's minimal moisture and impurity levels ensure it remains chemically stable and maintains its performance characteristics during extended storage and transit periods.
Brand: prinita chem
Country Of Origin: India
Sodium Sulphite (Na2SO3) is a high-quality, food/photo-grade chemical used across the pulp & paper, water treatment, photography, and food industries. Supplied in 25kg bags, this white powder ensures compositional accuracy, low moisture content, and extended shelf life. It functions as an antioxidant, antichlor, enzyme inhibitor, and oxygen scavenger in multiple industrial applications.
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