A new organosilicon inhibitor-organosilicon amino-methylene phosphonic acid inhibitor was synthesized with organosilicon amine and phosphorous acid and poly-formaldehyde. The inhibiting effects of organosilicon amino-methylene phosphonic acid inhibitors on iron in Laboratory Brine and Imitative Cooling Water are investigated by AC impedance, potentiodynamic polarization measurement and corrosion rate test (CRT).
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