General Description and Use:
Chemical name: Ammonium polyphosphate
Molecular Formula: (NH4PO3)n
Cas No.68333-79-9
 
APP-3 is a product based on ammonium polyphosphate. The crystal modification is phase II. It is manufactured from APP-1 by micro-encapsulation with melamine.
APP-3 is a fine-particle white powder with very low solubility in water, even at elevated temperatures. It is completely insoluble in organic solvents. The product is non-hygroscopic and non-flammable.
APP-3 differs from APP-1 in the following properties:
– marked reduction in water
– soluble constituents
– even lower viscosity in aqueous suspension
– lower heat stability in the temperature range > 300 °C
– improved powder flowability.
Main use in Plastic(PP,PE,PA,PVC,PBT),PU, Rubber, Paint, Textiles coating…
Specifications:
Physical Appearance……………………………………………White powder
Phosphorus content, %wt……………………………………….29 min
Nitrogen content, %wt………………………………………….15 min
Degree of polymerization……………………………………….1500 min
Density (g/cm3)…………………….………………………………1.9(g/cm3)
Decomposition temperature……………………………………..275℃ min
Solubility in water (25℃g/100mlH2O)…………………………0.1 g/100mlH2O max
PH………………………………………………. …………….. 6~7.5
Average particle size…………………………………………….16um max

Handling:
Minimum shelf life is 12 months from the date of shipping when stored according to the said conditions.
 
Packaging: APP-3 is packed in 25 kg 4-ply paper bags with polyethylene inliner. The standard supply unit is a shrink-wrapped pallet with 40 bags weighing 1000 kg net.
 
APP-3 can also be supplied in a variety of big bags, shrink-wrapped