Ammonium Polyphosphate (Phase-ii)

Our offered range of Ammonium polyphosphate (Phase-II) is available with following specifications :-
Molecular formula : (NH4PO3)n n>1000
CAS No.: 68333-79-9
EINECS No.: 269-789-9
HS CODE: 2835.3990
Model No.: PK-FRAPP-c
Molecular formula : (NH4PO3)n n>1000
CAS No.: 68333-79-9
EINECS No.: 269-789-9
HS CODE: 2835.3990
Model No.: PK-FRAPP-c

Specification :
SpecificationPK-FRAPP-c
Appearance White powder
P2O5 (w/w)a Y71%
N Content (w/w)a Y14%
Decomposition Temperature (TGA, onset)i 275a
Solubility (g/100ml water , at 25A C)i 0.5
pH value ( 10% aqueous suspension )6.5-7.5
Viscosity (10% aqueous suspension, at 25a )i 100 mpa.s
Moisture (w/w)i 0.25%
Average Prtical size (D50)10Aum

Ammonium polyphosphate (Phase II) is a non-halogen flame retardant. It acts as flame retardant by in tumescence mechanism. When APP-II is exposed to fire or heat, it decomposes to polymeric phosphate acid and ammonia. The poly phosphoric acid reacts with hydroxide groups to form a nonstable phosphate ester. Following dehydration of the phosphateester, a carbon foam is built up on the surface and acts as an insulation layer.