SYSTEMS INHIBITED AGAINST CORROSION AND/OR SCALE DEPOSITION

摘要

Systems inhibited against corrosion and/or scale deposition Aqueous or partly aqueous systems are treated against the corrosion of metals, especially ferrous metals, in contact therewith, and/or against scale deposition therefrom, by adding to these systems from 0.1 to 50 000 ppm of 2-hydroxyphosphonoacetic acid having the formula I I), or a water-soluble salt thereof.