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Ammonium polyphosphate
Product Name:Ammonium polyphosphate
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Ammonium polyphosphate

  (CAS: 68333-79-9)

  Product features:

  Ammonium Polyphosphate is an environment-friendly, non-toxic and halogen-free flame retardant additive, the formula is (NH4PO3)n. APP is an inorganic salt of polyphosphoric acid and ammonia.

  APP is a stable, non-volatile compound. When APP is exposed to fire or heat, it decomposes to polymeric phosphate acid and ammonia. The polyphosphoric acid reacts with hydroxyl groups to form a nonstable phosphateester. Following dehydration of the phosphateester, a carbon foam is built up on the surface and acts as an insulation layer.

  Quality index:




White powder

P content, (%)

31.0 - 32.0

N content, (%)

14.0 - 15.0

Average polymerization, (N)

≥ 1000

Solubility in water, (25℃, g/100mL)

About 0.5

Moisture, (wt/%)

≤ 0.25

PH value(10% aqueous suspension)

5.5 - 7.0

Average particle diameter, (D50), (µm)

About 15

Density, (g/cm³)

About 1.9

Bulk density, (g/cm³)

About 0.7

Viscosity, (10% aqueous suspension, mpa.s)

≤ 100

Decomposition temperature, (℃)

≥ 275


  used to produce intumescent type fire-retardant coating, used in plastic, rubber, coating, adhesives, sealant, and fiber, applied in flame retarding treatment of wood, paper, and fiberboard, applied in epoxy resin or unsaturated polyester.

  Packing, storage and transportation:

  Keep in cool, dry and shading place.

  It is packed by aper-polymer outer & PE inner bag, 25 kg/bag.

Order:Ammonium polyphosphate





Qingdao Collect Chemical Co.,Ltd
Qingdao Collect Flame Retardant Tech Co.,Ltd
Mobile: 0086-18554855655
Tel/Fax: 0086-532-86998155
Add: No.127 Lushan Road,Huangdao District,Qingdao City,Shandong, China

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Qingdao Collect Chemical Co.,Ltd
Qingdao Collect Flame Retardant Tech Co.,Ltd
Mobile: 0086-18554855655
Add:No.127 Lushan Road, Huangdao District, Qingdao City, Shandong, China
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