Ammonium polyphosphate CAS NO. 68333-79-9MF (NH4PO3)n is a phosphorus-nitrogen type non-halogenfire retardant. Ammonium polyphosphate MF (NH4PO3)n has high P and N elementsand has good thermal stability, almost neutral, non-toxic and low smoke. Ammonium polyphosphateMF (NH4PO3)n can be used in engineering plastics, rubber conveyor belts, and intumescent fire retardant paints .Ammonium polyphosphate MF (NH4PO3)n has low water solubility, low processing viscosity and high flame retardancy. When used in coatings/paints, Ammonium polyphosphate MF (NH4PO3)n has better rheology and stability.
Physical and Chemical Properties
| Item | APP I | APP II |
| Appearance | — | White Powder |
| P2O5 content % | ≥70.0 | ≥71.0 |
| Nitrogen content % | ≥14.0 | ≥14.0 |
| Mean polymerization Ñ | ≥200 | ≥1000 |
| Solubility（g/100mLH2O） | --- | ≤1.0 |
| Moisture ω/%, 130℃ | --- | ≤0.25 |
| PH value | 5.0-7.0 | 5.5-7.5 |
| Mean particle diameter (D50) µ m | --- | ≤20 |
Key Advantage
●Good thermal stability.
●Low viscosity, good dispersion.
●Low water solubility, good resistance to precipitation and migration.
●High degree of polymerization (n≥1000).
●High purity, narrow particle size distribution range.
Application:
●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 fibreboard.
●applied in epoxy resin or unsaturated polyester.
Packing and store:packing: 25kg/bag compound paper & plastic bag, or jumbo bag.
Store: storing in dry, ventilated and moistureproof conditions.
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