Method and composition for inhibiting corrosion
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United States of America Patent
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Feb 3, 1998
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N/A
app pub date -
Nov 12, 1996
filing date -
Aug 15, 1994
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Abstract
Corrosion of ferrous metal surfaces in an aqueous system, such as a boiler system, is inhibited by adding a first component and a second component, the first component being preferably carbohydrazide, hydrazine, or a salt thereof, the second component being selected from the group consisting of certain hydroxylamine compounds or mixtures thereof, preferably N,N-diethylhydroxylamine. The weight ratio of the added first component to the added second component is between about 4:1 and about 1:4.
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