Method for inhibition of oxygen corrosion in aqueous systems by

Compositions – Preservative agents – Anti-corrosion

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252393, 252395, 25238954, 25218828, 422 12, 422 13, 422 16, 422 19, C23F 1112, C23F 1116

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active

055871097

ABSTRACT:
A method of treating an aqueous system is described which comprises incorporating in the system a hydroxylamine derivative of the general formula: ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 which may be the same or different represents hydrogen, alkyl of 1 to 8 carbon atoms or aryl or a water soluble salt thereof or a precursor thereof, and a tannin in a weight ratio of at least 2:1. This is particularly useful for boiler water systems.

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