RUST PREVENTIVE OR RUST REMOVING AGENT OR CLEANING WATER USING ELECTROLYTIC CATHODIC WATER

摘要

PROBLEM TO BE SOLVED: To provide a rust preventive not containing metal ions. SOLUTION: The rust preventive not containing the metal ions is realized by using ion exchange water or the electrolytic cathodic water obtained by electrolyzing pure water. Accordingly, the electrolytic cathodic water is alkaline and exhibits a rust preventive effect by forming a passive state film on the surface of iron.