Chloramine B
Agrochemicals 2025-03-02
Chloramine B
Chemical Name: Sodium N-chlorobenzenesulfonamide
Synonyms: Benzenesulfonchloramide sodium salt; Chloramine-B
CAS Number: 127-52-6
Molecular Formula: C₆H₅ClNNaO₂S
Molecular Weight: 213.62 g/mol
Physical & Chemical Properties
| Property | Specification |
|---|---|
| Appearance | White crystalline powder |
| Odor | Slight chlorine-like |
| Melting Point | 180-185°C (dec.) |
| Solubility | Freely soluble in water (50 g/100 mL); soluble in ethanol |
| Active Chlorine | 28-30% (typical) |
| pH (1% sol.) | 8.5-10.5 |
Hazard & Safety Information (GHS)
Danger Symbols:
☠️ Acute Toxicity (Category 4)
⚠️ Skin/Eye Irritant (Category 2)
⚡ Oxidizing Solid (Category 3)
Hazard Codes:
• H302: Harmful if swallowed
• H315: Causes skin irritation
• H319: Causes serious eye irritation
• H335: May cause respiratory irritation
• H272: May intensify fire (oxidizer)
Precautionary Measures:
• P280: Wear gloves/eye protection
• P305+P351+P338: Eye rinse procedure
• P310: Immediate medical attention if ingested
Chemical Behavior
• Reactivity:
- Releases active chlorine in water
- Reacts violently with:
- Strong acids → toxic chlorine gas
- Reducing agents → exothermic reaction
• Decomposition:
-
200°C → nitrogen oxides, sulfur oxides
Applications
✔ Disinfection:
- Water treatment
- Surgical instrument sterilization
✔ Organic Synthesis: - Mild chlorinating agent
- N-Chloro compounds precursor
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