Synonyms: Phosphonitrilechloride, polymer (6CI); Ammonium chloride-phosphorus pentachloride polymer,SRU; Dichlorophosphazine polymer; Hexachlorocyclotriphosphazene homopolymer,SRU; Hexachlorocyclotriphosphazene polymer, SRU;Hexamethyldisilazane-phosphorus pentachloride copolymer, SRU; Phosphonitrilepolymer; Phosphonitrilic chloride polymer; Phosphonitrilic chloride polymer,SRU; Poly(dichlorophosphazene); Poly(dichlorophosphonitrile);Poly(hexachlorocyclotriphosphazene), SRU;Poly[nitrile(dichlorophosphoranylidyne)];Trichloro(trimethylsilyl)phosphoranimine homopolymer, SRU