REACH 68333-79-9 Ammonium Polyphosphate Flame Retardant Additive Intumescent Coat
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|Molecular Formula||(NH4)n+2PnO3n+1||CAS NO||68333-79-9|
|HS CODE||28353990||EINECS No||269-789-9|
|Cas No.||683337899||Einecs No.||2697899|
|Usage||Intumescent Coating Agents|
REACH Ammonium Polyphosphate Flame Retardant,
Ammonium Polyphosphate Flame Retardant additive,
68333-79-9 intumescent fire retardant
Ammomiun Polyphosphate Flame Retardant Additive For Intumescent Coating
Ammonium polyphosphate, also known as ammonium polyphosphate or polycondensation ammonium polyphosphate (APP), was first developed by Monsanto in 1965. Ammonium polyphosphate is non-toxic and tasteless, does not produce corrosive gas, has low hygroscopic property and high thermal stability. It is a non-halogen flame retardant with excellent performance.
How do the flame retardants work?
The mechanism of phosphorous flame retardants is mainly the formation of isolation film to achieve the effect of flame retardants: the thermal degradation of flame retardants causes rapid dehydration and carbonization of the polymer surface, and then the formation of carbonization layer. Because elemental carbon does not perform the evaporative combustion and decomposition combustion of flame, it has the function of flame retardant protection. The flame retardant effect of phosphorous series flame retardants on oxygen-containing polymers is achieved by this method. The reason is that the final product of thermal decomposition of phosphorous compounds is polymetaphosphoric acid, which is a strong dehydrating agent.