Improved corrosion inhibition of metals in water systems.

摘要

The inhibition of corrosion of metals in water conducting systems by organic aminoalkylenephosphonic acid derivatives is improved by using in combination therewith a manganese compound capable of providing manganese ions. The said aminoalkylenephosphonic acid derivative may also contain other functional groups, eg. carboxylates, quaternary amines, hydroxyalkyl groups and the like.