PHOSPHATE-BASED CORROSION INHIBITOR COMPOSITION OF LIQUID TYPE FOR CORROSION CONTROL IN DRINKING WATER DISTRIBUTION SYSTEM

摘要

PURPOSE: A corrosion inhibitor composition of liquid type for corrosion control in drinking water distribution system is provided to obtain superior cleaning effect of water distributing and supplying pipes and various functions for preventing corrosion, to remove rust and solve red water problems. CONSTITUTION: The corrosion inhibitor composition comprises 15 to 21 wt.% of phosphoric acid, 3 to 5 wt.% of sodium pyrophosphate, 1.5 to 3 wt.% of citric acid and 17 to 22 wt.% of zinc sulfate based on the total weight of the composition, wherein the composition is prepared by uniformly mixing the above constituents with water at an ordinary temperature so that content of all constituents including water becomes 100 wt.%.