Formula:  (NH4PO3)n

CAS NO:  269-789-9

Appearance: white powder

Application:

It can be used in expanding fireproof material, such as polyurethane, UP resin and epoxy resin. Also used in the retardant of fibre, wood and plastic. APP is main ingredient of expanding retardant thermoplastic because of its high molecular weight and good heat stabilization.Especially used in the PP achieving UL94-V0 for electronic unit.

Feature:

Low hygroscopic after surface treatment; Ph value is basic; low water solubility. 

Package:25kg woven bags

Storage and transportation: Handle with care, keep airtight and dry.

Specifications:
Phosphorus content:  27~29%

Solubility in water (g/100cm3):  0.09% Max

PH value:                  7.5~9

Average particle size:  15µm Max

Thermal decomposition temperature, 1%:  280 C Min