Sodium Chlorite CAS 7758-19-2 Solid & Liquid: THE Guide for Applications, Safety & Compliance
Release time: 2025-09-22
BLi-T (Hefei) Chemical Co., Ltd., a supplier of high-purity sodium chlorite products, is dedicated to providing reliable solutions while guiding users on safe and efficient usage. As a critical inorganic compound widely used in water treatment, bleaching, and disinfection, sodium chlorite (NaClO₂) CAS 7758-19-2 plays an indispensable role in industrial, laboratory, and even household scenarios.This comprehensive guide breaks down everything you need to know about sodium chlorite solid and liquid—from properties to applications, safety protocols, and beyond.
1. Performance Difference: Sodium Chlorite Solid vs. Liquid
Understanding the basic properties of sodium chlorite is the first step to safe use. The following is a detailed comparison of its solid and liquid forms, which can serve as a key reference for choosing the right type:
| Property | Sodium Chlorite Solid(80%-95% ) | Sodium Chlorite Liquid (20%-30% Solution) |
| Appearance | White to pale yellow-green crystalline powder, highly hygroscopic | Pale yellow-green transparent liquid with mild pungent odor |
| Melting Point | 180–200°C (decomposes) | N/A |
| Solubility | Highly soluble in water (790g/L at 0°C, increases with temperature) | Fully miscible with water |
| Density | 2.5 g/cm³ | ~1.15 g/cm³ (25% solution) |
| pH Value | 12–13 (aqueous solution at 20°C) | Alkaline (most stable at pH≈10) |
| Stability | Stable at room temperature; decomposes in acid, high heat, or with organics | Long-term stable at pH=10; non-flammable |
BLi-T Chemical QC—data based on industrial-grade sodium chlorite (≥98% purity for solid, 25% standard concentration for liquid).
2. Safe Application, Suitable for Various Scenarios
Sodium chlorite has a wide range of uses, making it a top choice for a variety of needs. Below are SEO-verified real-world application examples, accompanied by step-by-step guidelines to ensure effectiveness and safety, backed by BLi-T Chemical’s field experience.
2.1 Laboratory Use: Precision and Caution
Laboratories rely on sodium chlorite for research and small-scale chemical reactions. Here’s how to use it correctly:
Solid Dissolution:
Wear nitrile gloves, goggles, and a dust mask. Use water between 0-50°C (sodium chlorite decomposes easily at higher temperatures) and stir gently to avoid splashing. For a 25% solution, mix 250 kg of BLi-T solid sodium chlorite with 750 kg of deionized water.
Liquid Use:
Dilute BLi-T pre-made sodium chlorite liquid with distilled water as needed. To prepare chlorine dioxide (ClO₂), an acid-activated liquid is required:
Hydrochloric acid activation: Mix sodium chlorite and hydrochloric acid in a 1:2 ratio.
Citric acid activation: Mix sodium chlorite and citric acid in a 4:1 ratio.
Activate in a well-ventilated fume hood for 15 minutes (until the solution turns yellow-green and the ClO₂ content is ≥95%).
2.2 Industrial Applications: Efficiency and Compliance
Industries such as papermaking, water treatment, and textiles rely on sodium chlorite for large-scale production. BLi-T Chemical’s industrial-grade products meet ISO standards, ensuring consistent performance:
Pulp and fiber bleaching:
Use a 1-5% sodium chlorite solution (pH 3-5, 70-90°C) for 1-3 hours. Use with an activator such as acetic acid or ammonium sulfate and use a wooden or polyethylene container (do not use metal containers, as they will corrode). Water Treatment:
Drinking Water: Add 0.3-0.5 grams of sodium chlorite per ton of water and let it sit for 30 minutes.
Swimming Pools: Add 5-10 grams per cubic meter of water.
Industrial Circulating Water: Add 2-5 grams per ton of water (adjust according to water quality).
Food-Grade Bleaching:
Use sodium chlorite to treat flour, starch, or oil (adjust pH to 3-5 with citric acid) to meet food-grade quality standards.
2.3 Home Use: Disinfection and Preservation
To ensure safe home use, BLi-T recommends diluting sodium chlorite to a low concentration:
Disinfection:
General Surfaces: Dilute 1:1000-2000 for use on utensils, air, or livestock.
Drinking Water: Dilute 1:100,000-200,000.
Virus Prevention (e.g., common viruses, avian influenza): Dilute 1:1000 for spraying.
Flower Blanching:
Soak dried flowers in a 5% solution (40-50°C) for 1-3 hours; rinse thoroughly and air-dry.
Produce Preservation:Use a mixture of 25% sodium chlorite, 15% ferrous sulfate, 10% zinc oxide, and 50% activated charcoal (packaged in 5-10g bags) to extend the shelf life of fruits and vegetables.
3. Key Safety Guidelines and Emergency Response
Sodium chlorite is classified as a dangerous good (solid: UN 1496, liquid: UN 1908) due to its toxicity and reactivity.
The BLi-T Chemical Safety Team, referring to the MSDS, provides the following recommendations:
3.1 Personal Protective Equipment
Respiratory Protection: Use a filtering half-mask for dust/mist protection; in emergencies, switch to a self-contained breathing apparatus.
Eye and Skin Protection: Wear chemical safety goggles and acid-resistant gloves; for large scale operations, wear protective clothing.
Hygiene: Do not eat or smoke during handling. Wash hands and face thoroughly after handling.
3.2 Storage and Transportation
Storage:Store in a cool, dry, well-ventilated area (temperature ≤ 30°C, humidity ≤ 80%).
BLi-T solid sodium chlorite should be stored in 50 kg iron drums (packaging suitable for intermodal transport), and liquid sodium chlorite should be stored in 25/250/1250 kg plastic drums. Store away from acids, organic materials, and reducing agents.
Shelf life: ≤12 months (sealed); use each package completely at once to prevent decomposition.
Transportation:Separate from firefighting equipment and spill response tools. Avoid mixing with flammable materials or acids. Thoroughly clean the vehicle after unloading.
3.3 Emergency Response
Spills: We recommend that customers using sodium chlorite on a long-term basis keep sodium thiosulfate on hand as an emergency response.Evacuate the area; use a shovel to collect spills in a sealed container. Neutralize with excess sodium thiosulfate solution or flush with plenty of water.
Fire/Explosion: Sodium chlorite is a strong oxidizer; keep it away from flammable materials.Use water spray, sand, or carbon dioxide (avoid high-pressure water or dry powder). Move the container to an open area; evacuate immediately if the container shows signs of damage.
Contact:Skin/Eyes: Rinse with water for 15 minutes; seek medical attention.
Inhalation: Remove to fresh air; administer oxygen if necessary.
Ingestion: Do not induce vomiting; rinse mouth immediately and seek medical attention (ingestion of 5-6 grams may be life-threatening).
4. Waste Disposal and Environmental Compliance
Sodium chlorite waste is classified as hazardous waste (according to China’s 2025 National Hazardous Waste List and global standards). BLi-T Chemical recommends:
• Prioritize recycling whenever possible; non-recyclable waste should be incinerated (never discharge solid waste into the sewer).
• Store waste in sealed containers that are clearly labeled.
• Work with a licensed waste disposal company to meet local regulations (e.g., US EPA, EU REACH).
5. Why choose BLi-T (Hefei) Chemical Co., Ltd.?
Quality and safety are paramount for sodium chlorite. As a leading supplier, BLi-T Chemical offers the following advantages:
• New process: Our sodium chlorite uses China’s latest process, offering significant advantages in both production capacity and quality.
• High purity: Our solid sodium chlorite (≥98%) and liquid sodium chlorite (20-30%) meet industrial, food, and laboratory standards. • Custom Solutions: We offer customized concentrations and packaging based on specific needs (e.g., 10-liter kegs for laboratories and 1250 kg IBC cans for industrial use).
• Expert Support: We provide 24/7 technical guidance on usage, safety, and compliance.
• Global Export: BLIT Chemical exports worldwide via ocean freight, and our products are ISO 9001 and SGS certified.
To purchase high-quality solid or liquid sodium chlorite (CAS 7758-19-2), contact BLi-T (Hefei) Chemical Co., Ltd. today for a quote or technical support:
Email: info@blitchem.com
BLIT Chemical: Your trusted partner for safe and efficient chemical solutions.
