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- Brand：hebei qujie
- Model：25kg/Bag
- Purity：99%
- Cas：68333-79-9
- Createtime： 2026-06-04
- Updatetime： 2026-06-05
| useage | Halogen-free flame retardant; soluble grade for NP fertilizer |
| deliveryInfo | |
| appearance | white powder |
| aliasen | |
| supplyCapacity | 80T/Month |
| harbor | tianjin qingdao shanghai |
| minorder | 1KG |
Introduction:
Ammonium polyphosphate is an inorganic salt and containing both chains and possibly branching. Its chemical formula is [NH4PO3]n(OH)2 showing that each monomer consists of an orthophosphate radical of a phosphorus atom with three oxygens and one negative charge neutralized by an ammonium cation leaving two bonds free to polymerize. In the branched cases some monomers are missing the ammonium anion and instead link to three other monomers.
Application
Ammonium polyphosphate is used as a food additive, emulsifier, (E number: E545) and as a fertilizer.
Ammonium polyphosphate (APP) is also used as a flame retardant in many applications such as paints and coatings, and in a variety of polymers: the most important ones are polyolefins, and particularly polypropylene, where APP is part of intumescent systems. Compounding with APP-based flame retardants in polypropylene is described in.Further applications are thermosets, where APP is used in unsaturated polyesters and gel coats (APP blends with synergists), epoxies and polyurethane castings (intumescent systems). APP is also applied to flame retard polyurethane foams.
Items Standard Value Test Results Appearance Powder Powder Available P2O5 58.0%min 58.3% Total Nitrogen (N) 18.0%min 18.2% Polymerization Rate 65.0%min 72.5% Degree of Polymerization 2-5 3.4 Solubility(in 100mL water) 175g min Water Insoluble 0.1% Not detected Moisture(H2O) 0.5% max 0.31% pH Value 6-8 7.2 Hg 0.1ppm max 0.01ppm Particle Size (beneath 20 mesh) 90.0%min 90.00% 
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