**Hexachlorocyclotriphosphazene** (chemical formula: **(NPCl₂)₃**) is an important organophosphorus compound. Below are its key details:
### **Chemical Properties**
- **Structure**: Cyclic phosphazene structure, consisting of alternating three phosphorus atoms and three nitrogen atoms, with each phosphorus atom bonded to two chlorine atoms.
- **Appearance**: Typically a white crystalline solid.
- **Molecular Weight**: 347.66 g/mol.
### **Main Applications**
1. **Polymer Synthesis**: Used as a precursor for polyphosphazenes, which are applied in high-performance elastomers, flame-retardant materials, etc.
2. **Flame Retardant**: Utilized in the synthesis of efficient flame retardants for plastics, rubber, and textiles.
3. **Chemical Intermediate**: Employed in the synthesis of pharmaceuticals, agrochemicals, and other specialty chemicals.
### **Safety Information**
- **Hazards**: Irritating to skin, eyes, and respiratory tract. Should be handled in a well-ventilated environment.
- **Storage Conditions**: Store in a sealed container, avoiding moisture and high temperatures.
### **Additional Information**
- **CAS Number**: 940-71-6
- **EINECS Number**: 233-782-3
If you need more detailed technical data or application examples, please refer to chemical databases or related literature.
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