... viscosity in aqueous suspensions - lower viscosity in PU polyol suspension Ammonium polyphosphate (APP-0S*) Molecular Formula: (NH4PO3)nAppearance : White powderSpecifications:P ... 5Particle sizeDav:16umS*: Silicon coating* Crystal :Phase II APP-1 is a fine-particle ammonium polyphosphate produced by a special method. The ... PP,PE,PA,PVC,PBT),PU, Rubber ,Paint ,coating Ammonium polyphosphate (phase II)