NaHSO₃
Liquid Solution
Sodium Bisulfite
Sodium Bisulfite (NaHSO₃) is a strong inorganic reducing agent supplied in aqueous solution. It is used for free-chlorine removal, dissolved-oxygen reduction and oxidation control in water treatment and industrial processes. Its liquid form feeds directly into automated dosing systems, enabling continuous controlled dosing without dissolution equipment. Food-grade solutions may be used as antioxidants and preservatives within applicable regulations and limits.
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WORKING MECHANISM
How it works
in your process.
Bisulfite ions in solution reduce free chlorine, hypochlorite and other oxidizing species, helping protect process equipment from oxidative effects. In water treatment it is preferred for free-chlorine protection of polyamide membranes; suitable food-grade solutions support oxidation control and product stability.
Technical specifications
- Chemical Name
- Sodium Bisulfite
- Chemical Formula
- NaHSO₃
- CAS No.
- 7631-90-5
- Physical Form
- Aqueous solution
- Appearance
- Clear / pale-yellow solution
- Product Concentration
- According to product specification
Applications
Water Treatment
Free-chlorine removal, dechlorination and membrane protection in RO, UF, NF and seawater-treatment systems.
Industrial Water Systems
Dissolved-oxygen reduction and oxidation control in boiler-feed water, process water and industrial applications.
Pulp & Paper
Reduction reactions, bleaching processes and support for process stability.
Textiles
Post-bleaching antichlor treatments, dyeing processes and reduction baths.
Chemical Processing
Process chemical and reducing agent in a range of chemical-synthesis applications.
Food Processing — Food Grade
Subject to applicable legislation and limits, use in fruit and vegetable processing, dried fruit, beverages, wine and fermentation, sauces, marinades, olive-oil-based products and seasoning preparations for antioxidant, preservative and color-stabilization functions.
Packaging and storage
30 kg drums · 250 kg drums · 1,000 kg IBC · Tanker · ISO Tank on request
Store in compatible tanks protected from direct sunlight. Storage temperature and air contact should be controlled to maintain product stability.
TECHNICAL DOCUMENTS
Request TDS and MSDS
Contact our team with the product name to receive the current technical data sheet and safety data sheet.