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Ammonium Polyphosphate(APP201)

Molecular formula : (NH4PO3)n   n>1000
CAS No.: 68333-79-9    Ammonium Poly Phosphate(APP201)
EINECS No.: 269-789-9
Model No.: CF-APP201
Ammonium polyphosphate(Phase II) is a non-halogen flame retardant. Ammonium polyphosphate 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 phosphateester. Following dehydration of the phosphateester, 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)

≥31

N Content

%(w/w)

>14

Decomposition Temperature

¡æ

>270

Density(25¡æ)

g/cm3

~1.9

Solubility

g/100ml H2O, 25¡æ

~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 : Ammonium Polyphosphate is packed in 25kg woven bag with plastic liner.