COMPOSITION FOR COPPER CORROSION PROTECTION, AND COPPER CORROSION PROTECTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a corrosion protection agent for copper low in toxicity, also free from the risk of causing environmental contamination, having high corrosion protection properties to copper, and capable of obtaining effect even in pitting corrosion prevention, and a copper corrosion protection method.SOLUTION: Provided is composition for copper corrosion protection containing at least one kind of a cinnamic acid derivative represented by the following formula and the salt thereof(one of R1 to R3 is H, the one of the remaining two is an alkoxy group; and the remaining one is H, a hydroxyl group or an alkoxy group).SELECTED DRAWING: None