Ammonium PolyPhosphate
Molecular formula : (NH4PO3)n n>1000
CAS No.: 68333-79-9
EINECS No.: 269-789-9
Model No.: CF-APP201
Ammonium polyphosphate is a non-halogen flame retardant. It acts as flame retardant by intumescence mechanism. When APP is exposed to fire or heat, ammonium phosphate 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.
Ammonium Polyphosphate 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 |
Ammonium Polyphosphate Use :
In plastics(PP, PVC, PE, etc. ), Polyester, Rubber, and Expandable fireproof coatings.
Packing : 25kg woven bag with plastic liner.
Phosphates are basically compounds of phosphorus and oxygen that occur in many forms and are usually combined with other elements. We offer a wide range of phosphate compounds such as ANHYDROUS TRISODIUM PHOSPHATE,DIAMMONIUM PHOSPHATE,DICALCIUM PHOSPHATE and so on.