Ammonium Polyphosphate (APP),appearance is white powder , capacity : 100 MT /week , port of loading : tianjin port or shanghai . Ammonium Polyphosphate (APP) Molecular Formula: (NH4)n+2PnO3n+1Standard: HG/T2770-1996Properties: it is an excellent, high-efficiency and nontoxic inorganic flame retardant, used as the necessary flameproof additive for all kinds of expanding-type flameproof coating and ...