ammonium polyphosphate

About the product
Ammonium polyphosphate(phase-II)
Molecular formula : (NH4PO3)n  n>1000CAS No.: 68333-79-9EINECS No.: 269-789-9
HS CODE: 2835.3900Model No.: TFAPP02-1, TFAPP02-2  (similar to Exolit AP422)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 phosphateester. Following dehydration of the phosphateester, a carbon foam is built up on the surface and acts as an insulation layer.Specification :





Specification
 


Value




TFAPP02-1


TFAPP02-2




Appearance


 White powder


White powder




P2O5 %(w/w)


≥71


≥71




N Content %(w/w)


≥14


≥14




Decomposition Temperature ℃


>270


>270




Solubility    g/100ml H2O, 25℃


<0.5


<0.5




pH value  ( 10% aqueous suspension )


6.5-7.5


6.5-7.5




Viscosity  (10%suspension, 25℃)


<20


<100




Moisture  %(w/w)


<0.25


<0.25




Average Partical size


12um


12um





Applications:
1. used to prepare many kinds of high-efficiency expanding-type flameproof coating, the flameproof treatment for multistory building, ships, trains, cables, etc. 2. used in the flameproof treatment for woods, plywood, fiberboard, papers, fibers, etc.3. used as the main flameproof additive for expanding-type flame retardant used in plastic, resin, rubber, etc.4. make into powder extinguishing agent to be used in large-area outfire for forest, oil field and coal field, etc.
5. In plastics(PP, PVC, PE, etc. ), Polyester, Rubber, and Expandable fireproof coatings.
 
Packing : 25kg woven bag with plastic liner. 20mt/20’fcl without pallets, 18mt/20’fcl with pallets.
 
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