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Ammonium polyphosphate (APP) is a kind of low N and high P polyphosphate,
According to the degree of polymerization, ammonium polyphosphate can be divided into oligomer, medium polymerization and high polymerization.
The greater the degree of polymerization, the smaller the water solubility.
The crystalline ammonium polyphosphate is water insoluble and long chain polyphosphate.
Applications
①Flame retardant industry use:
Polymerization degree below 20, it is called oligomeric APP, and when the polymerization degree is above 500, it is called high polymer APP.
The oligomeric water-soluble APP is mainly used in the flame retardant of cellulose materials such as paper and wood.
APP with high degree of polymerization is widely used in expandable fireproof coating, polyethylene, polypropylene, polyurethane, epoxy resin, rubber products, fibre board and dry powder fire extinguishing agent, etc.
It is a safe and efficient nitrogen and phosphorus.
Packaging
25kgs Polywoven bag.
Technical specification
Technical data sheet:
| Item | Spec. |
|---|---|
| Appearance | White powder |
| P | 31% min |
| N | 14% min |
| pH(10% aqueous suspension) | 5.5-7.5 |
| Solubility in water | 0.5g/100ml max |
| Viscosity (10% suspension) | 100mPa.s max |
| Average particle size (D50) | 15-20μm |
| Particle size (>100μm) | 0 |
| Average Polymerization degree | 1000 min |
| Moisture | 0.25% max |
| Decomposition temperature | 270℃ min |
On a small screen, scroll the technical table horizontally.
Published reference specifications. Confirm the current grade, SDS / TDS / COA, packaging and delivery terms with your quotation.