Sodium Chlorite
Sodium chlorite (NaClO2) is a key precursor for generating chlorine dioxide, widely used for drinking water disinfection, wastewater treatment, and textile & pulp bleaching
Sodium Chlorite Technical Specifications & CAS Data
- CAS Number: 7758-19-2
- UN NO.: 1496
- EINECS NO.: 231-836-6
- Molecular Formula: NaClO2
- Purity (%): Powder 80%, 82%, 90%/Liquid 25%, 31%
- Appearance: Colorless or light yellow transparent liquid; white powder
- Application: Municipal drinking water treatment; Seawater desalination; Food processing sanitation;Cooling water treatment Pulp and paper bleaching;
- Packing: Customized according to customer requirements
- Other Name: Chlorous acid, sodium salt; Textone
Sodium Chlorite Specification
HOO CHEMTEC supplies high-quality Sodium Chlorite (NaClO2) 25%-31% Liquid & 80% Powder for industrial water treatment, drinking water disinfection, and chlorine dioxide generation applications. As a professional water treatment chemical supplier, we provide stable supply, export-standard packaging, and technical documentation including SDS and COA.
| ITEMS | SPECIFICATIONS |
| Sodium chlorite(NaClO2) | ≥31% |
| Sodium chlorate (NaclO3) | ≤0.8% |
| Sodium hydroxide(NaOH) | ≤0.4% |
| Sodium carbonate(Na2CO3) | ≤0.4% |
| Chloride(Nacl) | ≤1.5% |
| Sodium sulfare(NA2SO4) | ≤0.1% |
| sodium nitrate(NaNO3) | ≤0.1% |
| Density | ≤1.31g/cm3 |
| ITEMS | SPECIFICATIONS |
| Sodium chlorite(NaClO2) | ≥80% |
| Sodium chlorate (NaclO3) | ≤1.0% |
| Sodium hydroxide(NaOH) | ≤0.6% |
| Sodium carbonate(Na2CO3) | ≤0.8% |
| Chloride(Nacl) | ≤17% |
| Sodium sulfare(NA2SO4) | ≤0.8% |
| sodium nitrate(NaNO3) | ≤0.1% |
| Arsenic(As) | ≤0.0003% |
Type of Sodium Chlorite
Core Differences: Sodium Chlorite Powder vs. Liquid
| Feature | Solid Powder (80% – 82%) | Liquid Solution (25% – 31%) |
| Appearance | White or light yellow crystal powder | Colorless to light yellow liquid |
| Stability | Very unstable; Class 5.1 oxidizer | Relatively stable; keep away from light/heat |
| Safety | Flammable and explosive near organic matter | Corrosive, but much lower explosion risk |
| Transport | Strict Hazmat rules; high shipping cost | Hazmat rules; easier to handle/package |
| Ease of Use | Needs manual mixing; creates dust | Ready to use via pump; fully automated |
What is Sodium Chlorite Used for
Sodium chlorite is widely used across many industries where safe and effective disinfection, oxidation or bleaching is needed.
- Chlorine dioxide generation for water treatment: Sodium chlorite is the main precursor for producing chlorine dioxide (ClO₂), which is used for municipal drinking water disinfection, wastewater treatment and seawater purification.
- Industrial and municipal wastewater treatment: Sodium chlorite-based systems help remove odors, reduce COD and control microorganisms in industrial effluents and municipal wastewater.
- Food sanitation and surface disinfection: Chlorine dioxide generated from sodium chlorite is applied to sanitize fruits, vegetables, meat processing lines and food-contact surfaces, helping to control pathogens and improve food safety.
- Cooling tower and HVAC systems: Sodium chlorite helps control biofilm, algae and bacteria in cooling towers, HVAC systems and industrial circulation water, improving system efficiency and hygiene.
- Pulp, paper and textile bleaching: In combination with chlorine dioxide, sodium chlorite is used to bleach pulp, paper and textiles, providing high whiteness while reducing chlorinated organic by-products compared with traditional chlorine bleaching.
- Oilfield, mining and other industrial processes: Sodium chlorite can be used for downhole disinfection, odor control and oxidation in oilfield operations, as well as in other industrial processes that require controlled oxidation.
FAQ of Sodium Chlorite
Yes. Solid Sodium Chlorite is a Class 5.1 Oxidizer (UN 1496), and the solution is typically a Class 8 Corrosive (UN 1908). As professional exporters, we provide all necessary IMDG documentation and UN-approved packaging for safe transit.
While it has some oxidative properties on its own, its true power is unlocked when converted into Chlorine Dioxide (ClO2). This is usually done by mixing it with an acid activator.
Sodium Hypochlorite (bleach) is a weaker oxidizer and often creates “chlorine smells” and harmful by-products. Sodium Chlorite (via ClO2) is a more powerful, selective disinfectant that works across a wider pH range.
Yes, Sodium Chlorite (NaClO2) is an excellent and highly effective chemical for seawater purification, but it is important to understand how it works. In professional water treatment, it is used as the precursor to generate Chlorine Dioxide (ClO2), which is the actual disinfecting agent.
Yes. HOO CHEMTEC supplies Sodium Chlorite 80% for bulk industrial applications and international distribution.
Bulk supply advantages include:
- Stable product availability
- Competitive factory pricing
- Export documentation support
- Flexible shipment arrangements
Customers can contact us for current availability and quotation.
For international shipments, HOO CHEMTEC can provide standard export documentation, including:
- Certificate of Analysis (COA)
- Safety Data Sheet (SDS)
- Technical Data Sheet (TDS)
- Certificate of Origin (CO)
Additional documents can be prepared according to customer and destination requirements.
Hoochemtec provides sodium chlorite in various safe and compliant packaging options suitable for different markets and logistics requirements.
Liquid Sodium Chlorite Packaging
- 25 kg HDPE drums
- 1250 L IBC tanks
Sodium Chlorite Powder Packaging
- 25 kg fiber or plastic drums with inner liner
- Other sizes available upon request
Store in a cool, dry, well-ventilated area using UN-certified packaging, keeping it strictly isolated from acids, flammables, and organic materials.
Hoochemtec: Your Premier Manufacturer for High-Purity Sodium Chlorite
At Hoochemtec, we don’t just supply chemicals; we engineer the essential precursors for global water safety and industrial hygiene. As a dedicated Sodium Chlorite manufacturer, we operate state-of-the-art production lines that deliver both 80% Powder and Liquid Solutions (25%-35%) to meet the rigorous demands of the ClO2 generation industry.
Why Choose Hoochchemtec?
- Factory Direct Supply, Superior Quality: Hoochchemtec provides stable and reliable sodium chlorite, available in both liquid (25%–35%) and high-purity solid (80%–82%) forms. Purity can be customized to meet your specific needs.
- Professional Hazardous Materials Logistics: Sodium chlorite is a Class 5.1 oxidizing agent and requires specialized transportation. Hoochchemtec holds hazardous materials transportation qualifications, utilizing UN-approved packaging and compliant maritime logistics to ensure safe, legal, and timely delivery of products worldwide.
- Solution-Oriented Service: We do more than sell chemicals; we solve problems. From technical support on chemical dosage optimization to navigating complex export regulations, our team provides fast quotations and expert guidance for a worry-free procurement process.
- Hoochchemtec’s Advantage: Partner with a supplier that combines massive production capacity with elite logistics. We turn the challenges of hazardous chemical sourcing into a safe and efficient experience, protecting your supply chain.
