AMMONIUM POLYPHOSPHATE (APP)
Molecular formula:(NH4) 3PO4, (NH4) n+2PnO3n+1
CAS Number:68333-79-9
As per polymerization, APP can be divided into three types, i.e high polymerization APP, medium polymerization APP and low polymerization APP.The higher polymerization is, the less solubility will be. As per the structure APP may be divided into two type , namely crystalline APP and amorphous APP .Crystalline APP is a water insoluble and long-chain polyphosphate, and it has 5 variants named as variant I to V, As a white powder water insoluble APP is not deliquescent and has got very good compatibility with other aids ; Water soluble APP is apt to cake under normal temperature, but this will not affect it performance and application. As a flame-proof agent, it is mainly applied to flame-proof coatings, plastic, rubbers, wood and paper etc.
Main Advantages
◆APP is a poisonless product.
◆It can also be used as a highly concentrated NP fertilizer or feed additive.
◆As highly concentrated NP fertilizer, it's usually used as liquid fertilizer in solution form.
Packing and Storage
Solution form is in IBC or flexitank in container. Solid form in 25kg,50kg net WPP/PE bags. Store at a cool,dry and well ventilated place.
SPECIFICATIONS
Liquid form APP(11-37-0)
No | Specification | Water soluble APP | |
1 |
Appearance | Clear colorless or light liquid without obvious floating objects | |
2 | Phosphorus pentoxide(P2O5)≥% | 37.0 | |
3 | Nitrogen as N≥% | 11 | |
4 | Polyphosphate Content ≥% | 70 | |
5 | Water Insoluble ≤% | 0.2 | |
6 | PH of 1% water solution | 5.9-6.5 | |
7 | Density | 1.39-1.42 | |
Solid form
NO. | Specifications | APP I | APP II | Water soluble APP |
1 | Appearance | White Powder | White Powder | White Powder or Lumps |
2 | P2O5≥% | 68.0 | 71.0 | 46.0 |
3 | Nitrogen, as N≥% | 13.0 | 14.0 | 24.0 |
4 | PH of 1% water solution | 4.5-6.5 | 5.5-7.5 | 6.5-8.5 |
5 | Average polymerization(N) | 20-100 | 1000Min | ------ |
6 | verage partical size(μｍ) | ------ | 8-15 | ------ |
7 | Water insoluble(25℃)≤% | ------ | ------ | 0.01 |
8 | Decomposition Temperature℃＞ | ------ | 270 | ------ |
9 | Solubility (g/100ml water, 25℃) | 3-5 | 0.5Max | 80.9Min |