Chemical Name: Phosphonitrilic chloride trimer
- CAS No.940-71-6
- Molecular Formula:Cl6N3P3
- Formula Weight:347.659
Synonyms:1,3,5,2,4,6-Triazatriphosphorine,2,2,4,4,6,6-hexachloro-2,2,4,4,6,6-hexahydro- (8CI,9CI);Phosphonitrilechloride, trimer (6CI);2,2,4,4,6,6
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Phosphonitrilic chloride trimer, widely recognized by its CAS number 940-71-6 and often supplied with a purity of 98% or higher, is a pivotal inorganic heterocyclic compound belonging to the class of chlorophosphazenes. Its molecular formula is (NPCl₂)₃, representing a cyclic trimer structure composed of alternating nitrogen and phosphorus atoms forming a six-membered ring, with each phosphorus atom bonded to two chlorine substituents. This distinctive planar or puckered ring geometry imparts unique chemical stability and reactivity, making it an essential building block in advanced materials science.
Primarily utilized as a versatile precursor in the synthesis of high-performance polymers, phosphonitrilic chloride trimer serves as the fundamental monomer for producing poly(dichlorophosphazene). Through controlled nucleophilic substitution reactions, the chlorine atoms can be replaced by various organic groups, including alkoxy, aryloxy, amino, and fluorinated moieties. This modularity allows chemists to engineer polymers with tailored properties such as exceptional thermal stability, flame retardancy, biocompatibility, and resistance to hydrolysis and oxidation. Consequently, these modified phosphazene polymers find extensive applications in diverse industrial sectors, ranging from aerospace engineering and electronics to biomedical devices and protective coatings.
In the pharmaceutical industry, specific derivatives exhibit low toxicity and are investigated for drug delivery systems and tissue engineering scaffolds due to their biodegradability and tunable degradation rates. Furthermore, the raw material is crucial in manufacturing fire-retardant additives for plastics and rubbers, enhancing safety standards without compromising mechanical integrity. The 98% purity grade ensures minimal side reactions during polymerization, guaranteeing consistent molecular weight distribution and optimal performance in final products. As a key intermediate in organophosphorus chemistry, this compound bridges the gap between simple inorganic salts and complex functional macromolecules, driving innovation in next-generation material development across global research laboratories and manufacturing facilities.
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