An inorganic ammonium salt of polyphosphate. It is used as a flame retardant and as a fertilizer. The chain length (n) of this polymer is variable and can be linear or branched.
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This entity has been manually annotated by the ChEBI Team.
Please note that the structure shown is generic. Ammonium polyphosphate (APP) is a polymeric compound which can be linear or branched. Depending on the polymerization degree there are two main types of ammonium polyphosphates. APP Phase I are short, linear chain APPs where n<100, are highly water soluble and less thermally stable, decomposing at temperatures above 150°C. APP Phase II have a high polymerization degree, where n>1000 and is branched (cross-linked), it also has higher thermal stability, decomposition starts around 300°C.