Budit 3149 Modified Ammonium Phosphate Budenheim Flame retardant / Fire retardant >> Phosphorus based Flame retardant agent Modified Ammonium Polyphosphate The synergistic effect produced by the combination of phosphorus and nitrogen means that only a minimal concentration is required. Flammability and any smouldering are prevented by acid - catalysed dehydration and formation of inert gases Modified Ammonium Polyphosphate flame retardant agent. Prevents flammability and any smouldering by acid - catalysed dehydration and formation of inert gases.