Poly(dichlorophosphazene)

Poly(dichlorophosphazene)

Names
Other names Dichlorophosphazine polymer; Phosphonitrilechloride polymer
Identifiers
CAS Number	26085-02-9
Abbreviations	PDCP
ChemSpider	none
ECHA InfoCard	100.152.298
Properties
Chemical formula	(PNCl2)n
Density	1.823 g/mL[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Poly(dichlorophosphazene), also called dichlorophosphazine polymer or phosphonitrilechloride polymer, is a chemical compound with formula (PNCl₂)_n. It is an inorganic (hence carbon-free) chloropolymer, whose backbone is a chain of alternating phosphorus and nitrogen atoms, connected by alternating single and double covalent bonds.

The compound can be prepared by polymerization of hexachlorophosphazene ((PNCl₂)₃) by heating to ca. 250 °C.^[2][3] It is an "inorganic rubber" and the starting material for many other polymers with the -P=N- backbone (polyphosphazenes), which have important commercial uses.