1.No toxicity
2.No halogen
3.High degree of polymerization
4.Quality products with low prices
5.High compatibility
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Ammonium Polyphosphate (APP)
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Appearance: White, flow powder
Technical index
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No.
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Index name
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Value
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1
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Degree of polymerization
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>1000
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2
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P %(w/w)
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31.0-32.0
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3
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N %(w/w)
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14.0-15.0
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4
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PH value (20°C,10% Suspension)
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5.5-7.0
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5
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Moisture %
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<0.25
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6
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Thermal decomposition temperature °C
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≥275
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7
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Density (25°C,Kg/L)
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about 1.9
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8
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Bulk Density (25°C,Kg/L)
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about 0.7
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9
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Viscosity (25°C, 10% Suspension) mpa.s ≤
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100
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10
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Water-solubility (g/100cm3 water) ≤
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0.5
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11
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Average size um
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10-30
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Uses: APP is mainly used in intumescent fire retardant coatings and polyurethane foam, also be used in the flame retardance of fiber, wood and rubber products. With high Molecular Weight (n>1000)and stability, it can be used as the active matter of intumescent flame-retardant thermoplastic, especially for fire retardant PP (UL94-V0) and cable materials.
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