Sodium Chlorite – Industrial Chemical for Water Treatment and Bleaching Applications
Introduction
Sodium Chlorite is an inorganic chemical compound with the formula NaClO₂. It is commonly supplied as a white crystalline solid or in aqueous solution, depending on the grade and intended application. Sodium Chlorite is primarily valued as a chemical precursor for generating chlorine dioxide, which is used in selected water treatment, pulp and paper processing, textile bleaching, and industrial sanitation applications.
Industrial Applications
Sodium Chlorite is used in water treatment processes where chlorine dioxide is generated under controlled conditions for disinfection and oxidation. Its use depends on the treatment system, water quality, and applicable regulatory requirements.
In the pulp and paper industry, Sodium Chlorite is used in certain bleaching processes to help remove unwanted coloration from pulp and other materials. It is also used in textile processing and selected industrial applications where chlorine dioxide-based treatment is required. Product grade and process conditions should be selected according to the specific application.
Key Benefits
Sodium Chlorite serves as a useful precursor for chlorine dioxide generation in appropriately designed industrial systems. It supports selected oxidation, bleaching, and disinfection processes and can be incorporated into controlled treatment systems where its chemical properties are suitable. Performance depends on product purity, concentration, operating conditions, and the method of application.
Product Specifications
| Parameter | Specification |
|---|---|
| Product Name | Sodium Chlorite |
| Chemical Formula | NaClO₂ |
| CAS Number | 7758-19-2 |
| Molecular Weight | 90.44 g/mol |
| Appearance | White or pale crystalline solid; commercial solutions may also be available |
| Chemical Type | Inorganic sodium salt |
| Primary Function | Precursor for chlorine dioxide |
| Solubility | Soluble in water |
| Main Applications | Water treatment, pulp and paper bleaching, textile processing |
| Packaging | Supplier-specific, subject to grade and concentration |
| Storage | Store in compatible packaging according to the SDS |
Note: Specifications vary by grade and concentration. Confirm the supplier’s technical data sheet before purchase.
Storage and Handling
Sodium Chlorite is an oxidizing chemical and must be handled by trained personnel using appropriate protective equipment and established safety procedures. Keep it away from acids, reducing agents, combustible materials, and other incompatible substances. Contact with acids can release toxic chlorine dioxide or other hazardous chlorine-containing gases under certain conditions. Store it in a cool, dry, well-ventilated area using compatible, clearly labelled containers. Follow the supplier’s Safety Data Sheet (SDS) for handling, storage, transport, and emergency response.
Quality and Supply
Sodium Chlorite is available in different commercial grades and concentrations for specific industrial applications. Buyers should verify purity or active concentration, physical form, packaging, applicable standards, and technical documentation before ordering. Selection should be based on the requirements of the intended treatment or manufacturing process.
Conclusion
Sodium Chlorite is an important industrial chemical used primarily as a precursor for chlorine dioxide in selected water treatment, bleaching, and processing applications. Its oxidizing properties make careful product selection, controlled use, and appropriate safety measures essential for industrial operations.
