| 摘要 |
PURPOSE:The titled compostion effective for preventing the corrosion of metal parts, e.g., steam valve, heat exchanger, erc. and inhibiting the corrosion of holes or channels, comprising a specific hydroxylamine compound (water-soluble salt) and a neutral amine. CONSTITUTION:The desired composition comprising (A) a hydroxylamine compound (preferably N,N-diethylhydroxylamine) shown by the formula (R1, R2, and R3 are H, lower alkyl, or aryl) or its water-soluble salt and (B) a neutral amine, e.g., cyclohexylamine, morpholine, etc. Preferably 0.001-100ppm of component A and 1-1,500ppm of component B are added to an aqueous system to carry out corrosion prevention. A boiler condensate aqueous system is preferable as the aqueous system.
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