VERDIGRIS INHIBITOR AND VERDIGRIS INHIBITION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a verdigris inhibitor which does not contain hydrazine and has improved handleability in operation; and to provide a verdigris inhibition method.;SOLUTION: The verdigris inhibition method inhibits verdigris in an objective water system by using carbohydrazide and an azole-based copper anticorrosive. For example, the verdigris inhibitor can eliminate verdigris while suppressing damage to a copper material and also can suppress the adhesion of eliminated verdigris. Furthermore, since carbohydrazide is not an object substance of PRTR, the verdigris inhibitor has a high degree of safety and can improve handleability on work operation.;COPYRIGHT: (C)2012,JPO&INPIT