DMA-2P is a lesser known amine than the first three discussed. DMA-2P will protect the far reaches of long distance low pressure systems. DMA-2P will not form an amine carbonate in the condensate return system. Ammonia Ammonium hydroxide is used as a neutralizing amine in situations where live steam contacts a food product. This type of amine is the only product acceptable in dairy plant systems.
Ammonia is also very corrosive to copper and copper alloys.
Octadecylamine Octadecylamine is not a volatilizing amine. It will not volatilize in a boiler below 425 psig. ODA therefore must be injected into the steam header via a vapor steam injection nozzle. When injected into the steam header it exists as a dispersion in the steam. Octadeyclamine is not soluble in water so when it falls out of the steam solution it lays down the passivating mechanism.