Sodium Chlorite
| Formula: | NaClO₂ |
| CAS Number: | 7758-19-2 |
| EC Number (EINECS): | 231-836-6 |
| HS Code: | 2828.90 |
| UN Number: | 1509 |
| IUPAC Name: | Sodium Chlorite |
| Also Known As: | Sodium Chlorite, Disodium Chlorite |
| Molecular Weight, g/mol: | 90.44 |
Typical Specifications
| Appearance: | White to off-white crystalline powder |
| Odor: | Slight chlorine-like odor |
| Melting Point, °C: | 180 (decomposes) |
| Boiling Point, °C: | Decomposes before boiling |
| Density, g/cm³ (at 20°C): | 2.01 |
| Flash Point, °C: | Not applicable |
| pH (1% solution): | 8–10 |
| Purity, %: | ≥80–85 |
| Grades Available: | Technical, Industrial |
| Packaging: | 25kg bags, 500kg drums, bulk containers |
Applications / Uses
Primary Applications
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Disinfectant and bleaching agent in water treatment
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Oxidizing agent in chemical synthesis
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Used in pulp and paper industry for bleaching
Secondary Applications
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Used in textile processing and dyeing
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Ingredient in cleaning and sanitation products
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Intermediate for chlorine dioxide production
End Industries Served: Water Treatment, Pulp & Paper, Textile, Chemical, Sanitation
Safety & Handling Information
Hazard Class (GHS): Oxidizing solid (Category 2), Acute Toxicity (Category 4)
Hazard Statements (H-Codes):
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H272: May intensify fire; oxidizer
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H302: Harmful if swallowed
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H314: Causes severe skin burns and eye damage
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H332: Harmful if inhaled
Precautionary Statements (P-Codes):
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P210: Keep away from heat, sparks, open flames
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P280: Wear protective gloves/eye protection
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P305 + P351 + P338: IF IN EYES – rinse cautiously with water, remove contact lenses if present
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P401: Store in a cool, dry, well-ventilated place away from incompatible materials
Storage Conditions
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Store in a tightly sealed container
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Keep away from reducing agents, organic materials, and acids
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Avoid moisture and contamination
Transport Information
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ADR/RID: Class 5.1 (Oxidizing substances), UN1509, PG II
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IMDG: Class 5.1, UN1509
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IATA: Class 5.1, UN1509