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Ammonium Polyphosphate

(1.3)
Supplier From China
Jan-19-11

Ammonium polyphosphate(phase-II)
(CF-APP201)
Molecular formula : (NH4PO3)n n>1000
CAS No.: 68333-79-9
EINECS No.: 269-789-9
Model No.: CF-APP201
Ammonium polyphosphate(Phase II) is a non-halogen flame retardant. It acts as flame retardant by intumescence mechanism. When APP-II is exposed to fire or heat, it decomposes to polymeric phosphate acid and ammonia. The polyphosphoric acid reacts with hydroxyl groups to form a nonstable phosphate ester. Following dehydration of the phosphate ester, a carbon foam is built up on the surface and acts as an insulation layer.
Specification :
Specification Value
Appearance White powder
P Content %(w/w) í¦31
N Content %(w/w) >14
Decomposition Temperature íµ >270
Density(25íµ) g/cm3 ~1.9
Solubility g/100ml H2O, 25íµ ~0.5
pH value ( 10% aqueous suspension ) 5.5-7.5
Viscosity (10%suspension, 25oC) <100
Monisture %(w/w) <0.25
Average particle size µm ~15
Particle size(<50 µm) %(w/w) >97
Use : In plastics(PP, PVC, PE, etc. ), Polyester, Rubber, and Expandable fireproof coatings.


Packing : 25kg woven bag with plastic liner.

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