CORROSION INHIBITOR COMPOSITION AND ALKALI CLEANING LIQUID COMPOSITION FOR NONFERROUS METAL

摘要

PROBLEM TO BE SOLVED: To provide a corrosion inhibitor composition added to nonferrous metals, particularly, to an alkali cleaning liquid of aluminum or aluminum alloys, and having excellent corrosion inhibition effects to amorphous metal bases, and an alkali cleaning liquid composition for nonferrous metals.SOLUTION: Provided is a corrosion inhibitor composition added to an alkali cleaning liquid of nonferrous metals, being an aqueous solution at least either 14 to 36C dibasic acid group acid-containing acid having two carboxy groups in the molecule and its salt.SELECTED DRAWING: None