Acetone oxime is widely used in boiler water deoxidizer,organic synthesis intermediate,polyurethane sealing agent and other industries.It is non-toxic,environmentally friendly,economical and safe.It has replaced hydrazine hydrate and is widely used in developed countries in Europe and America.The reasonable addition of acetone oxime can inhibit the oxygen corrosion of the water supply system,reduce the iron content of the water supply,reduce the iron pollution entering the boiler,prevent the overheating and corrosion damage of the metal tubes caused by the formation of iron oxide deposits in the boiler,so as to ensure the safe and economic operation of the thermal equipment.In addition,acetone oxime is used as the passivating agent after boiler pickling.After boiler pickling,the metal surface has high activity,so it is necessary to use a passivating agent to generate a dense protective film on the metal surface to prevent secondary corrosion of metal.