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ammonium polyphosphate(Phase II )
ammonium polyphosphate(Phase II )
Supplier Info
[China Supplier]
Contact Person : Mr. wang Guohua
Tel : 86-511-84417435
Fax : 86-511-84411179
Product Detail
Intumescent fireproof coatings Polyurethane foams particularly PP, PE ,EVA etc....., Textile Coating,Casting resins based

Ammonium polyphosphate (APP-1 )    

Molecular Formula: (NH4PO3)n

Appearance      : White powder


P (%):


N (%)


Degree of polymerization


Density (g/cm3)


Decomposition temperature


Moisture(% 110°C)


Solubility in water (25°Cg/100mlH2O)

<0.2 g

Viscosity  (25°C in 10%suspension)

< 20 mpa.s



Average particle size (um)


* Crystal :Phase II

Intumescent fireproof coatings

  On account of its low water solubility, APP-1 is particularly suitable as  for intumescent fireproof coatings. Other essential components of intumescent systems include a binder, a carbon donor (e.g. pentaerythritol) and blowing agent (e.g. melamine).

 Polyurethane foams

APP-1 is a suitable non-halogenated flame retardant for polyurethane foams. If handling of APP-1 as a solid is not possible we recommend the dosage of the flame retardant by preparing a APP-1/ polyol-suspension , it is also possible to incorporate this flame retardant in a APP-1 / isocyanate suspension.

Other applications

APP-1 has an excellent flame-retardant effect in cellulose-containing materials such as paper and wood products. 

Because of its high heat stability, APP-1 is an essential component in intumescent formulations for thermoplastics, particularly PP, PE ,EVA etc.....,  Textile Coating,Casting resins based on epoxy resins or unsaturated polyester resins. 

Shipping Informations

 The package is 25kg paper bag inner-lined with PE bag or on customer  request and can be loaded 17.5mt with pallet or 19.6mt without pallet in one full 20FCL.

ammonium polyphosphate(Phase II )

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