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Help CenterBest Price ! Flame Retardant Ammonium Polyphosphate / APP (NH4PO3)n
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flame retardant Ammonium Polyphosphate APP CAS NO. 68333-79-9 (NH4PO3)n
APP Ammonium Polyphosphate II
Chemical Formula : (NH4PO3) n n≥1000
Ammonium Polyphosphate II is a long-chain ammonium polyphosphate. It is non-flammable, largely insoluble in water, stable and compatible with some polymers.
Ammonium polyphosphate is an environmentally friendly halogen free flame retardant, which develops its effectiveness through phosphorus / nitrogen synergism. It is usually used with charring agent and foaming agent. The flame retardant treated material foams on exposure to flame. The carbon foam layer so formed protects the polymer through its heat-insulating effect.
Chemical Properties:
Item |
Unit |
Index |
Appearance |
|
White Powder |
Formula |
|
(NH4PO3)n |
Degree of polymerization (n) |
|
≥1000 |
P2O5 Content |
%(w/w) |
≥71.0 |
Nitrogen(N) Content |
%(w/w) |
≥14.0 |
pH Value (10% suspension) |
|
5.5-7.5 |
Water Content (130°C) |
%(w/w) |
≤0.25 |
Solubility in water (25°C) |
g/100mL H2O |
≤0.5 |
Viscosity (25°C, 10% suspension) |
mPaS |
≤100 |
Density (25°C) |
g/cm3 |
About 1.9 |
Bulk Density (25°C) |
g/cm3 |
About 0.7 |
Thermal Decomposition Temp. (5% weight loss) |
°C |
≥275 |
Crystal Form |
|
Phase II |
Average particle size (D50) |
μm |
about 20 |
Packing:
25 kg net weight woven plastic / polyethylene bags
20 MT per 20 foot container without pallet
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